Sustainability Archives - YFile /yfile/tag/sustainability/ Wed, 05 Aug 2026 19:16:13 +0000 en-CA hourly 1 https://wordpress.org/?v=6.9.7 A 91亚色 professor, a PhD student's email, and 35 years of forest research /yfile/2026/08/05/a-york-professor-a-phd-students-email-and-35-years-of-forest-research/ Wed, 05 Aug 2026 19:08:15 +0000 /yfile/?p=409068 When a doctoral student in Poland sought help navigating a complex body of forest research, 91亚色 professor Tarmo Remmel answered. The unexpected collaboration that followed traced 35 years of advances in forest fragmentation research while offering lessons for the next generation of researchers.

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A question from a doctoral student set 91亚色 Professor Tarmo Remmel on an unexpected path.

Remmel did not set out to be the co-author of a paper tracing more than three decades of forest fragmentation research.

Even when Sanjana Dutt, a PhD candidate at the Nicolaus Copernicus University in Poland, first reached out seeking advice on her dissertation, co-authoring a paper was never part of the plan.

Dutt had come across Remmel's work on forest change analysis, landscape metrics and forest fragmentation, areas he has spent much of his career studying while developing new ways to map, quantify and compare changes in forest landscapes.

Seeking guidance for a section of her dissertation, she contacted him because of his expertise in the field and his extensive experience measuring and analyzing changes in forest landscapes. Dutt was looking for advice on how to organize and synthesize a large and growing body of research focused on forest fragmentation and the various techniques scientists use to analyze it.

The phenomenon occurs when large, continuous forests are broken into smaller, isolated patches, often because of roads, farming, resource extraction and development. As forests are divided, fewer areas remain deep within the forest, creating conditions that can affect wildlife habitat, biodiversity and ecosystem health. Because scientists and conservation planners rely on fragmentation research to understand those impacts and guide conservation efforts, accurately measuring fragmentation has become increasingly important.

Advances in satellite imaging potential, remote sensing algorithms, computing power and cloud-based analytical platforms have transformed how scientists study forests. Those developments have given scientists more ways than ever to assess fragmentation and track changes across landscapes, leading to a rapidly expanding body of research and analytical approaches.

Making sense of that increasingly complex landscape of methods was one of the reasons Dutt sought Remmel's advice. She wanted to better understand how the field's analytical techniques had developed over time, where they overlapped and how researchers could meaningfully evaluate their findings.

Remmel, meanwhile, saw value in how Dutt's aspirations would benefit not just her, but others.

鈥淟arge review and synthesis papers are useful ways to build visibility and benchmarks for burgeoning academics,鈥 he says.

Remmel, who teaches in the Faculty of Environmental and Urban Change, says they exchanged numerous messages, worked together to refine the study's methodology and identified areas where additional research and context were needed. As the collaboration developed, so too did the scope of the project, eventually leading to Dutt asking Remmel to be co-author on a comprehensive review of how forest fragmentation research has evolved over the past three decades.

The resulting paper, , examines how scientists have measured and analyzed forest fragmentation over the past 35 years while identifying opportunities to make future research more consistent and useful for conservation decision-making.

Dutt conducted a systematic analysis of 138 studies published between 1990 and 2025, grouping them into 12 methodological categories ranging from traditional measures of forest patch size and shape to more recent approaches involving connectivity modelling, remote sensing, time-series analysis and three-dimensional forest mapping.

鈥淭he work identifies a long history of metric development that has evolved to consider many parameters that influence the quantification of forest fragmentation,鈥 says Remmel.

The review found that research has expanded dramatically over time as advances in satellite imagery, remote sensing and computing created new ways of studying forests. Yet scholars have not abandoned older approaches in favour of a single better method, instead continuing to build an increasingly complex toolbox of techniques.

This has created challenges, the authors say. Differences in scale, data, methodology and reporting can make fragmentation studies difficult to evaluate side by side, making it harder to tell whether results reflect genuine differences in forest conditions or simply different ways of measuring them.

鈥淭his is an important reminder that just inventing new tools does not necessarily solve problems,鈥 Remmel says, 鈥渂ut that figuring out how to apply and compare results consistently carries tremendous weight and benefit.鈥

Consistent results matter because forest fragmentation research is not only theoretical. Investigators, conservation planners and policymakers use it to monitor environmental change, assess ecosystem health and guide management decisions. If methods are not clearly documented or results cannot be compared, it becomes harder to translate research into repeatable and actionable results.

As a result, the authors argue that future progress will depend less on developing new metrics and more on improving consistency and transparency through clearer reporting of how studies are conducted.

Remmel's hopes for what impact the work will have are rooted, in part, from the way it helped Dutt make sense of a complex and rapidly growing field.

鈥淪he was forced to think about broad timelines, developments and contributions, and how they fit into the bigger picture,鈥 he says, resulting in a structured starting point for researchers looking to understand the forest fragmentation literature. 鈥淭his certainly benefitted her but also makes some of this foundational literature review work less strenuous for others who will read this work later.鈥

Remmel says that value extends beyond this particular project. As academic literature continues to grow, he believes there is benefit in periodically stepping back to assess the state of a field, identify key developments and help researchers understand how current knowledge has evolved. Reviews such as this one can help clarify where a field has come from, where it stands today and where opportunities for future research may exist.

There was also personal value in the project for Remmel. Looking back over the review, he realized that the earliest period it covers coincided with his own graduate training. Over the decades that followed, he built a career studying forest change, spatial metrics and landscape pattern dynamics, adapting alongside the field as new methods and technologies emerged.

鈥淭his is a paper that I could have written based on my experiences,鈥 he says.

Instead, Remmel says he is grateful to have contributed to a project that brought together decades of study while helping a new generation of scholars navigate the field.

鈥淚 am thrilled that not only did someone else take on this responsibility but that they reached out to me for involvement too,鈥 he says. 鈥淭his is the circle of academic life in action and that makes me tremendously humble and thankful.鈥

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Greenbelt critical to Ontario鈥檚 ecological future, 91亚色 U report finds /yfile/2026/07/29/greenbelt-critical-to-ontarios-ecological-future-york-u-report-finds/ Wed, 29 Jul 2026 14:35:33 +0000 /yfile/?p=408896 Researchers with 91亚色鈥檚 Ecological Footprint Initiative say ecological data shows how protected lands support communities, resources and long-term environmental goals.

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As Ontario faces growing pressure from population growth, development and climate change, new research from 91亚色 shows the province鈥檚 Greenbelt plays a significant role in sustaining the natural systems that support communities, agriculture and economic activity.

Professor Eric Miller as well as lead author and PhD student Peri Dworatzek have published a report titled which examines the protected natural and agricultural lands through the lens of biocapacity 鈥 the ability of land and ecosystems to provide resources and absorb environmental impacts.

Eric Miller
Eric Miller

Prepared by the for the Greenbelt Foundation, the report finds the Greenbelt provides significantly greater ecological biocapacity per hectare than the rest of Ontario, averaging 2.8 global hectares versus 1.02.

This, say the authors who worked with MES students Bumika Srikanthalingam and Kaitlin Pal, demonstrates the value of maintaining and strengthening protections for the region鈥檚 agricultural and natural landscapes.

The findings provide new evidence for policymakers and planners as they consider how future growth and infrastructure projects may affect the province鈥檚 environmental assets. The analysis indicates that increasing demand for land, food and fresh water could place additional strain on these systems if development is not carefully managed.

Miller and and Dworatzek identified several actions that could help safeguard and enhance the Greenbelt鈥檚 ecological capacity. These include improving the collection and use of land-use data; expanding mapping of agricultural, water and natural heritage systems; and making geospatial information more accessible to support planning decisions.

Peri Dworatzek
Peri Dworatzek

鈥淟and cover and biocapacity data provide valuable tools for informing decisions that can help maintain protections for the Greenbelt and the ecosystems that support Ontario鈥檚 growing population,鈥 says Miller. 鈥淢easuring biocapacity helps governments track progress towards sustainability and other environmental goals.鈥

The findings also emphasize the importance of restoring natural areas, supporting regenerative agricultural practices and improving soil health to strengthen long-term productivity. Researchers recommend integrating ecological capacity measures into municipal planning and natural asset management strategies.

Produced as part of the Greenbelt Foundation鈥檚 Visioning the Future of the Greenbelt series, the report positions the Greenbelt as a key component of Ontario鈥檚 response to environmental and resource challenges, Miller notes.

鈥淭he Greenbelt鈥檚 natural infrastructure provides significant value to Ontario. By quantifying those benefits, we can better inform planning and policy decisions that affect the region鈥檚 long-term sustainability,鈥 says Miller. 鈥淭his research demonstrates the measurable benefits natural systems provide to Ontario鈥檚 communities and economy, and offers a framework to support evidence-based planning.鈥

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Turning food waste into sustainable chemicals: 91亚色 study investigates /yfile/2026/07/24/turning-food-waste-into-sustainable-chemicals-york-study-investigates/ Fri, 24 Jul 2026 19:00:42 +0000 /yfile/?p=408843 91亚色 PhD candidate Reema Kumar has found a low-energy way to boost production of useful industrial chemicals from discarded food, helping turn waste into a valuable resource.

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What if food waste could be transformed into something useful instead of ending up in landfill? A new 91亚色-led study suggests carefully selected microorganisms could help recover valuable chemicals from discarded food while reducing the energy needed to produce them.

鈥淲hen we think of environmental sustainability, we often immediately think about newer energy-efficient technologies. Organic waste treatment becomes rather an afterthought,鈥 says Reema Kumar, a PhD candidate at 91亚色's and lead author of the study.

Reema Kumar
Reema Kumar

That perspective is beginning to change as researchers look for new ways to recover value from organic waste. Instead of sending food waste to landfill 鈥 where it can contribute to greenhouse gases and other forms of pollution 鈥 scientists are exploring how it can be converted into useful resources.

One promising approach uses microorganisms to break down discarded food and produce chemicals that are typically made from petroleum-based sources, creating an alternative to landfill disposal and fossil-based production.

While researchers have tested adding microorganisms to increase the production of useful compounds from discarded food, most of that research has focused on systems that operate at relatively warm temperatures. Much less is known about whether the same process can selectively produce compounds under colder, lower-energy conditions.

According to Kumar, maintaining warmer operating conditions can require significant energy input, particularly in colder climates. Seeking a more energy-efficient approach, Kumar and her colleagues turned their attention to lower-temperature systems.

鈥淲e were inspired to optimize this natural system of microorganisms using food waste to produce volatile fatty acids under lower temperature conditions to make it more energy efficient as well as provide a targeted approach for production,鈥 says Kumar.

They honed in on Clostridium butyricum, a bacterium known for generating butyric acid and a commercially valuable chemical commonly used in food, pharmaceutical and industrial products. Yielding such chemicals from organic waste could provide a more sustainable alternative to conventional manufacturing methods that rely on fossil-fuel-derived raw materials.

Their work questioned whether introducing the bacterium into a low-temperature food-waste fermentation system could increase production of butyric acid.

In a study published in , Kumar and her collaborators tested the idea using food waste and wastewater sludge. The research was co-supervised by Lassonde Professor Satinder Kaur Brar, along with Guneet Kaur, associate professor at the University of Guelph.

The team created a series of small-scale experiments using food waste collected from restaurants in 91亚色 Lanes and sludge sourced from the Humber Wastewater Treatment Facility. Together, the food waste and sludge created conditions that allowed naturally occurring microorganisms to break down the waste.

Clostridium butyricum was then introduced into some of the samples to see if the bacterium could steer the process toward producing more butyric acid.

鈥淲e wanted to show that you can 鈥榞uide鈥 a complex microbial community, made up of many different bacteria naturally found in wastewater sludge, toward a specific, useful outcome just by introducing one well-chosen microorganism,鈥 says Kumar. 鈥淚t's a bit like steering a crowd by adding a few people who know where they're going.鈥

The approach worked even better than the researchers expected. The system that received the bacterium produced more than twice as many acids overall and more than five times as much butyric acid compared to the control.

鈥淲e didn't expect such a strong response at a temperature of 17 C," says Kumar. "That was a genuinely exciting result."

The findings, she adds, point to a future where discarded food can be viewed as a resource rather than waste.

Increasing the production of commercially valuable compouds at lower temperatures could pave the way for more energy-efficient waste-treatment systems that recover greater value from discarded food. Over time, it may help keep organic waste out of landfills while creating renewable alternatives to some petroleum-derived chemicals.

鈥淲e hope it helps move the needle toward low-cost, low-energy ways of recovering value from food waste, especially in colder countries,鈥 says Kumar. 鈥淥nce this approach can eventually be scaled up, it could support local biorefinery systems that turn organic waste into useful chemicals without requiring expensive heating infrastructure. That has real implications for both sustainability and economics.鈥

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91亚色 UNESCO Chair聽shapes聽future of sustainability in higher education /yfile/2026/07/24/york-unesco-chair-shapes-future-of-sustainability-in-higher-education/ Fri, 24 Jul 2026 18:59:09 +0000 /yfile/?p=408761 Learn how 91亚色鈥檚 UNESCO Chair in Reorienting Education towards Sustainability team helped convene international voices to develop a global statement on universities, sustainability and the future of higher education.

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A global consensus outlining how universities can help address some of the world's most pressing challenges has emerged from an initiative led by 91亚色's UNESCO Chair in Reorienting Education towards Sustainability.

outlines priorities for higher education institutions as they work to advance sustainable development and contribute to discussions about sustainable development beyond 2030.

Introduced July 13 during the Global Higher Education Symposium at United Nations Headquarters in New 91亚色, the work was developed through a drafting process including global consultation led by Katrin Kohl, co-chair of the UNESCO Chair in Reorienting Education towards Sustainability at 91亚色.

Charles Hopkins and Katrin Kohl
Charles Hopkins, UNESCO Chair in Reorienting Education towards Sustainability at 91亚色, and Katrin Kohl, co-chair of the UNESCO Chair.

The project brought together partners including UNESCO, United Nations Academic Impact, the United Nations Institute for Training and Research (UNITAR), the International Association of Universities and the International Science Council to build consensus around the role of higher education as a catalyst for positive change.

鈥淯niversities have an important role to play in helping society respond to global challenges, including climate change, inequality and emerging technologies,鈥 says Kohl. 鈥淭his statement brings together voices from around the world to identify how higher education can contribute to building a more sustainable future."

Perspectives from higher education leaders, researchers, international organizations, students and policymakers shaped a shared vision for priorities in higher education. The priorities include integrating sustainability across teaching, research and operations; strengthening democratic values and public trust; advancing inclusion and decolonization; using science and emerging technologies responsibly; and supporting changes to governance and funding systems.

UNESCO Chairholder Charles Hopkins says the initiative originated at 91亚色 and grew into an international collaboration with UN agencies concerned with higher education that resulted in the consensus statement.

The final document emerged from a global consultation process involving participants from around the world to build agreement on higher education's role in creating more sustainable, equitable and resilient societies.

The launch marks the latest contribution from 91亚色's UNESCO Chair in Reorienting Education towards Sustainability, established in 1999 as the first UNESCO Chair dedicated to education for sustainable development. For more than two decades, the Chair has worked with governments, international organizations, educators and institutions around the world to advance sustainability through education.

Hopkins says the statement represents an opportunity to strengthen the role of universities as partners in addressing complex issues beyond 2030 as conversations are beginning to emerge.

鈥淭he challenges the world faces do not exist in isolation, and neither can the solutions,鈥 says Hopkins. 鈥淯niversities have an important role to play as conveners, collaborators and catalysts for change.鈥

The statement is expected to inform ongoing international discussions about the future of higher education and sustainable development and provide a framework for institutions seeking to strengthen their contributions to social, environmental and economic well-being.

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Continuing a legacy: A student, a mentor and a study of wild bees /yfile/2026/07/17/continuing-a-conservation-legacy-a-student-a-mentor-and-a-study-of-wild-bees/ Fri, 17 Jul 2026 17:37:13 +0000 /yfile/?p=408661 For postdoctoral researcher Briann Dorin, a new study is a culmination of years of research, and a chance to build on the conservation science Professor Sheila Colla championed.

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A new study by postdoctoral researcher Briann Dorin illustrates how agricultural landscapes can support wild bees, and continues the conservation science research legacy of the late Professor Sheila Colla.

When聽Dorin was a doctoral student in the Faculty of Environmental & Urban Change and began discussing potential PhD research projects with Colla, her supervisor and one of Canada's leading pollinator conservation scientists, she already knew the questions she wanted to pursue.

With a background in wildlife biology, Dorin had followed growing concern about bee declines and understood the significance of the issue given the critical role pollinators play in maintaining healthy ecosystems and supporting food production.

鈥淟ike many others, I was deeply concerned about the declines we were seeing,鈥 Dorin says. She considered such question as: 鈥淲hat does effective pollinator conservation look like? How can we engage landowners in taking action to protect pollinators?鈥

Briann Dorin
Briann Dorin

For many doctoral students, refining broad interests into a focused dissertation project can be one of the most challenging parts of the process. Dorin says Colla鈥檚 guidance was instrumental in helping her navigate that challenge.

鈥淪he had an incredible ability to ask the right questions and encourage me to think more deeply about the science,鈥 says Dorin.

With Colla's mentorship, those questions eventually led Dorin to explore what she saw as an overlooked area.

She explains that while a lot of research focuses on crops that depend on animal pollination, such as apples and blueberries, crops that do not require pollinators cover larger areas of agricultural land.

鈥淚f we assume those landscapes don't matter because the crops themselves don't need bees, we're overlooking millions of acres that pollinators may still use,鈥 she says. 鈥淚 wanted to understand what role these pollinator-independent crops play in supporting wild bee populations across agricultural landscapes.鈥

That realization led Dorin and Colla to take a closer look at vineyards. Although grapes do not require animal pollination, vineyards represent large agricultural infrastructure and could provide important habitat for wild bees.

To explore that possibility, Dorin and Colla studied wild bee communities in 26 commercial vineyards in Niagara Region over two growing seasons. In addition to sampling bees, they examined factors including vegetation between vineyard rows, surrounding land uses, soil characteristics and topography.

The approach reflected one of Dorin's guiding principles throughout the project.

鈥淏ees don't recognize farm boundaries or distinguish between crop types,鈥 she says. 鈥淭hey move freely across the landscape 鈥 nesting, foraging and dispersing where suitable habitat and resources exist.鈥

For Dorin, taking that broader perspective is essential to developing conservation strategies that reflect how pollinators experience the landscape. The findings, now published in , reinforce that outlook.

鈥淥ur research found a very high abundance and diversity of wild bees in vineyard agroecosystems, showing that these independent crops can support thriving bee communities,鈥 says Dorin.

The study found that bee communities were shaped by a combination of local and landscape-level conditions. Bee abundance and diversity were typically higher in vineyards surrounded by semi-natural habitats such as forests and treed areas. Taller vegetation between vineyard rows was also linked to healthier bee communities.

Another finding involved nesting habitat. Soil conditions were linked to different types of bees, suggesting conservation efforts must consider not only where pollinators find food, but also where they live and reproduce.

The results were the culmination of years of work for both Dorin and Colla.

Sheila Colla
Sheila Colla

Finishing the project, however, was not without its challenges. Examining wild bee communities across vineyard environments from multiple angles was an ambitious undertaking. But Dorin says Colla never made anything feel impossible for her students.

鈥淪he genuinely believed we were capable of succeeding,鈥 says Dorin. 鈥淪he trusted her students with meaningful responsibility, but she was always there when we needed guidance.鈥

And because research rarely goes exactly as planned, she says, there were plenty of moments when that support was needed. Dorin recalls that whether challenges emerged during fieldwork, in the lab or during data analysis, Colla consistently offered advice, reassurance and a fresh perspective.

That commitment to her students remained unchanged, even as Colla faced significant health challenges.

By then, much of the project's fieldwork had been completed and the focus had shifted to data analysis and writing. Dorin says Colla remained actively involved throughout that stage of the research, continuing to meet with her to discuss results and provide feedback.

鈥淓ven during such a difficult time, she was still thinking about her students,鈥 says Dorin. 鈥淭hat says a great deal about the kind of mentor she was.鈥

After Colla's death in 2025, finishing the project 鈥 even though much of the work had already been completed 鈥 was difficult for Dorin. She says it was impossible not to think about how much Colla would have enjoyed seeing the final dissertation and the resulting publications.

Dorin also believes Colla would have been especially excited by opportunities to share the findings with farmers, land managers and policymakers.

鈥淪he recognized that good science alone isn't enough,鈥 says Dorin. 鈥淪he believed that meaningful conservation requires research, but also policy, community engagement, education and action.鈥

That way of thinking continues to shape Dorin's own approach to conservation and her goals for this latest study. She hopes the findings will help bridge the gap between science and on-the-ground land management, and encourage new ways of thinking about how wild bees can be supported 鈥 even in landscapes not traditionally considered pollinator habitat.

The work also contributes to a more nuanced understanding of pollinator conservation. Ontario is home to hundreds of species of wild bees, each with different nesting and foraging requirements, making a one-size-fits-all solution for supporting pollinators unlikely. Instead, Dorin says, understanding how different habitats benefit different species can lead to more informed conservation decisions across agricultural ecosystems.

That includes, she says, thinking beyond individual farms. Pollinator conservation occurs at the landscape scale, meaning it is not only how a vineyard is managed that matters, but also how nearby forests, hedgerows, roadsides, neighbouring croplands and even soils are managed.

Dorin sees those ambitions as a continuation of Colla's influence.

鈥淭hroughout her career, she showed us that conservation is not something achieved in isolation. It requires connecting science with communities, research with action and people with the ecosystems they depend on,鈥 says Dorin.

Dorin was among the many students, researchers and conservation advocates influenced by that philosophy. The vineyard study 鈥 and the hopes she has for its impact 鈥 reflect lessons Colla instilled throughout her career.

鈥淐ompleting this project without her was bittersweet. I wish she could have been there for my defence and to celebrate these publications, but I feel incredibly grateful that I had her mentorship for so much of this journey,鈥 she says. 鈥淪heila was simply one of the best people I've ever known.鈥


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Can AI be trusted to assess climate risks? A 91亚色 study investigates /yfile/2026/07/15/can-ai-be-trusted-to-assess-climate-risks-a-york-study-investigates/ Wed, 15 Jul 2026 19:09:49 +0000 /yfile/?p=408595 A 91亚色 study explores how AI can help communities prepare for climate-related hazards by investigating whether emerging tools are ready for real-world applications.

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As AI is increasingly applied to fields studying how climate change affects the conditions beneath the Earth's surface, Faculty of Environmental and Urban Change (EUC) postdoctoral fellow Adedibu Sunny Akingboye is helping ensure the technology is used responsibly and reliably.

Scientists in environmental geophysics and geotechnical engineering study underground conditions that influence groundwater resources, landslide risks and the stability of critical infrastructure.

As climate change increases flooding and other extreme weather events, understanding what goes on beneath the Earth's surface is becoming more important.

Adedibu Sunny Akingboye
Adedibu Sunny Akingboye

To do that, researchers collect large volumes of information using seismic surveys, ground-penetrating radar, environmental sensors, satellite observations and borehole testing. Each source provides different information. Integrating and interpreting those datasets, however, can be a complex and time-consuming challenge.

"We now collect large amounts of geophysical, geotechnical and environmental data, but these datasets are often analyzed separately," says Akingboye, whose research in EUC focuses on climate-related hazards and infrastructure resilience.

That is one reason AI is steadily being applied in the field, he says. The technology improves how researchers merge datasets, analyze results and identify patterns. This provides a clearer understanding of subsurface conditions to assess landslide risks, monitor infrastructure and evaluate groundwater systems.

With AI expanding into environmental geophysics and geotechnical engineering, Akingboye paused to assess how the technology was being used.

"A question I had been thinking about for some time was, with the rapid growth of artificial intelligence, are we actually using it in the most meaningful way in environmental geophysics and geotechnical engineering?" he says.

Adeyemi Oludapo Olusola
Adeyemi Oludapo Olusola

That question became the starting point for a new co-authored by Akingboye and Professor Adeyemi Oludapo Olusola, who supervises his work in EUC. The paper examined hundreds of recent studies to assess how AI is being used in environmental geophysics and geotechnical engineering, evaluating both the progress being made and the challenges that remain.

鈥淭he sheer range of AI applications was surprising. We found AI being used for subsurface imaging, groundwater assessment, soil-rock characterization, landslide and slope instability prediction, and infrastructure monitoring, among many other applications,鈥 says Akingboye.

The review shows AI improves subsurface research by integrating multiple data streams to deliver detailed underground maps and efficient estimates of soil, rock and groundwater properties.

For Akingboye, documenting AI's growth was only part of the story; it was also about whether the technology could be trusted in environmental and engineering decision-making.

鈥淎 high-performing model is not automatically a useful or trustworthy one. We wanted to ask broader questions: Does the result agree with what we know about the subsurface? Can we explain it? Can we account for the uncertainty?鈥 says Akingboye.

The answer, the review found, is not always clear-cut. Across studies from around the world, researchers encountered recurring challenges including limited data, uncertainty, difficulty applying models across different geological settings and understanding how AI systems arrived at their conclusions.

Akingboye notes the challenges identified in the review are not simply technical problems. Inaccurate or poorly understood predictions can influence decisions about environmental hazards and critical infrastructure, making reliability as important as performance.

鈥淭hese are important gaps because a wrong interpretation can have serious consequences for environmental and engineering decision-making,鈥 says Akingboye. 鈥淭he impacts can be catastrophic and are often felt most severely by vulnerable and marginalized communities with fewer resources to prepare for, respond to and recover from environmental or infrastructure failures.鈥

As well as identifying challenges, the authors also sought to outline a path forward. They advocate for future AI-driven tools that merge diverse environmental and geological datasets, account for uncertainty and respect established scientific laws governing geological systems.

To advance AI tools, the authors recommend developing systems with more robust prediction rationale and stronger validation benchmarks. They also call for closer collaboration between researchers, industry and policymakers to ensure future models combine sensor and monitoring data to provide near real-time pictures of changing underground conditions.

Ultimately, the review argues that the next step lies in engineering complex AI models capable responding beyond the datasets and conditions on which they were trained.

鈥淭here is still a significant gap between a model that performs well in a research study and one that can be trusted and applied in real-world practice,鈥 says Akingboye. 鈥淚 think closing that gap, while ensuring that these technologies ultimately support safer, more resilient and equitable communities, is one of the most important areas for future work.鈥

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91亚色 research brings 3D-printed concrete closer to real-world use /yfile/2026/05/27/york-research-helps-3d-printed-concrete-reach-real-world/ Wed, 27 May 2026 16:01:35 +0000 /yfile/?p=406522 Using industrial-scale 3D printers at 91亚色鈥檚 Keele Campus, researchers supported durability and performance testing that secured regulatory approvals for a massive construction project.

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91亚色 research facilities and expertise helped secure regulatory approval for a Markham-based construction startup developing 3D-printed concrete.

The approval allows Aretek to move ahead with a three-storey student housing project at the University of Windsor, expected to be the largest 3D-printed concrete building in North America by volume.

Researchers at 91亚色鈥檚 have been working with the company to test materials, monitor performance and generate the technical evidence needed to bring an emerging construction method closer to real-world use.

Liam Butler
Liam Butler

Liam Butler, associate professor in the Department of Civil Engineering, has been working alongside Aretek 鈥 formerly known as Printerra 鈥 through a multi-year research partnership anchored at the Keele Campus. Aretek is one of the few Canadian companies specializing in additive concrete construction, commonly known as 3D-printed concrete.

The collaboration involves developing lower-carbon concrete mixes, full-scale structural testing, performance monitoring, long-term durability testing and the kind of technical evidence regulators need before approving an entirely new way of building.

"This is definitely putting 91亚色 on the map as a key collaborator," says Butler.

The road to that approval, however, was not straightforward. Unlike conventional construction materials, 3D-printed concrete has no formal building code or standard anywhere in the world.

"Aretek has had to overcome the fact that there is no template for how to evaluate these new systems. They've had to create their own through demonstration and testing," says Butler.

Rather than wait for new regulations, Aretek worked within existing masonry standards to design and test a 3D-printed wall system. It applied for code approval through a regulatory pathway that allows builders to prove a new method can meet safety and performance requirements, even when it is not yet covered by existing building codes. Butler was directly involved in that process, called on by Aretek to support discussions with the Building Materials Evaluation Commission on behalf of these new innovative materials.

"We've been asked as academics to join these conversations with building officials to help support their application for these regulatory approvals," he says.

That support was possible because of what 91亚色's Keele Campus offers. Aretek conducts research and development out of 91亚色's Climate Data-Driven Design (CD3) facility 鈥 a civil engineering lab that gives access to full-scale industrial 3D printers. For Butler, that full-scale capacity is one of the partnership鈥檚 most important advantages.

"Most research around the world in 3D-printed concrete is at the lab scale, using lab-sized printers or even printers that fit on a desktop," says Butler. "We actually have access to a full-scale industrial-size printer. The acceleration from lab scale to adoption is greatly shortened. New mixes we design can be immediately tested at the full scale. That is a very unique aspect of this research project."

One of the partnership's central research objectives is reducing cement content in 3D-printed concrete mixes. Cement is essential to the rapid-hardening properties that 3D printing requires but it is also one of the construction sector's most significant environmental liabilities. The cement and concrete sector accounts for around seven per cent of global greenhouse gas emissions.

"Reducing that cement content in mixes, even by 20 or 30 per cent, could have a large-scale impact across the sector," says Butler.

The partnership also extends into workforce training. As Aretek trains construction workers in 3D-printing methods, those workers need a new skill set: learning to operate robotic printing systems, manage material preparation, read digital files and follow safety protocols specific to additive construction equipment.

"Like any sector that is evolving and changing, there's always a degree of upskilling that's going to have to be involved," says Butler.

The Windsor project, once complete, could also make it easier for future projects to move through approval processes elsewhere.

"Once one solution has been approved by a certain jurisdiction, it sets an important precedent," says Butler. "It will open the floodgates to a lot of other projects and jurisdictions."

Looking ahead, Butler expects 3D-printed construction to grow rapidly with hybrid structures that combine 3D-printed concrete and mass timber or precast concrete. This could lead to more sustainable material mixes and an increasing number of companies entering the space. He hopes 91亚色 remains at the centre of that evolution.

For Butler, that close connection between university research and industry application 鈥 such as the Windsor project 鈥 is what makes the partnership significant.

"It's a wonderful mechanism for creating positive impact," he says, "being able to upscale directly from research to new real-world applications."

With files from Mzwandile Poncana

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91亚色 wins Fair Trade Campus of the Year /yfile/2026/05/13/york-university-wins-fair-trade-campus-of-the-year/ Wed, 13 May 2026 17:09:28 +0000 /yfile/?p=406679 Fairtrade Canada honours 91亚色 for ethical sourcing and campus-wide fair trade access. Discover where to find fair-trade-certified food and apparel across the University.

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91亚色 has been named Fair Trade Campus of the Year, a national honour recognizing excellence in ethical sourcing and sustainability.

This award, presented by Fairtrade Canada during the National Fair Trade Conference, marks 91亚色鈥檚 first time receiving the honour. The recognition builds on the University鈥檚 Silver Fair Trade Campus designation which it has held over the past two years and reflects its sustained leadership in embedding fair trade principles into everyday campus life.

91亚色 was recognized for its 鈥淔air Trade, Every Day鈥 approach, which has expanded the availability of fair trade-certified products across the University. As a result, tens of thousands of products are purchased each year, increasing access for the campus community while supporting ethical supply chains.

Fair trade-certified products 鈥 such as chocolate, coffee, tea and bananas 鈥 are available at various YU Eats locations including Stong College, Winters College, Central Square (Keele Campus) and Glendon Campus. The initiative also extends to apparel, with the 91亚色 Bookstore offering certified fair-trade T-shirts and hoodies through a partnership with Green Campus Co-op, a student- and faculty-founded organization established in 2011.

The award also acknowledges 91亚色鈥檚 broader leadership role in the sector. By hosting the National Fair Trade Conference in 2025 and maintaining an active presence in national conversations about fair trade in higher education, 91亚色 has become a hub for learning and collaboration.

91亚色 staff are frequently called on to share expertise on advancing fair trade in higher education. Sasa Netsorovic, director, Bookstore, printing and mailing services at 91亚色, recently shared insights on how campuses can translate fair trade values through procurement decisions, community partnerships and student engagement, drawing on 91亚色鈥檚 鈥淔air Trade, Every Day鈥 approach.

Nicole Arsenault, director of sustainability, says the award 鈥渞eflects years of dedicated work by students, faculty and staff who have championed fair trade and embedded it into campus culture.鈥

These efforts, she adds, support the United Nations鈥 Sustainable Development Goals.

With national recognition as Fair Trade Campus of the Year, 91亚色 continues to demonstrate how institutional commitment and community-driven action can create meaningful change.

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Global consumption exceeds Earth鈥檚 limits, 91亚色 researchers find /yfile/2026/04/29/global-consumption-exceeds-earths-limits-york-researchers-find/ Wed, 29 Apr 2026 17:57:09 +0000 /yfile/?p=406157 An open-access global dataset released by 91亚色's Ecological Footprint Initiative tracks decades of ecological impact and shows humanity鈥檚 high consumption outpaces global resource limits.

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Humanity is consuming natural resources much faster than the planet can replenish them, according to from 91亚色.

Tracking Earth鈥檚 ecological limits over more than six decades, the latest figures shared by the University鈥檚 Ecological Footprint Initiative show human activity now requires the equivalent of 1.7 Earths each year to sustain current levels of consumption.

Eric Miller is director of 91亚色鈥檚 Ecological Footprint Initiative 鈥 a multidisciplinary group of scholars, students and organizations working to advance understanding of the world鈥檚 ecological footprint and biocapacity. He warns that data reflects a 70 per cent overshoot of the planet鈥檚 renewable capacity. 

Eric Miller
Eric Miller

The figures, released on Earth Day, include what researchers describe as the most comprehensive open-access dataset to date that measures human impact on the planet. Produced in partnership with the University of Iceland, the ecological footprint dataset spans 1961- 2025 and measures the land and sea area needed to produce food, fibres and resources people use, and to absorb associated waste, including carbon emissions.

The dataset was developed through an innovative sustainability training program at the International Ecological Footprint Learning Lab, a multi-partner research initiative that brings together faculty and graduate students from 91亚色 and the University of Iceland. The program trains students to work with large environmental datasets while advancing research into ecological footprint and biocapacity. 

Along with Miller, 91亚色-based co-authors include master of environmental studies (MES) alums Kiona Lo and Neha Basnet as well as MES students Bumika SrikanthalingamBeatrice Foley and Anna Hao Long. Co-authors from the University of Iceland include Johanna Louise Van Berkum, Petra Toneva, Marina Ermina and Clara Klinkenberg. 

Anchor funding for this work was provided by the Social Sciences and Humanities Research Council of Canada (SSHRC) through a $2.5-million Talent-Stream Partnership Grant.

While the data suggest the rapid rise in global ecological pressure seen in recent decades may be slowing, there is still no clear evidence of a sustained decline.

鈥淔or the world to reach net-zero greenhouse gas emissions by 2050, humanity must reduce its total ecological footprint by at least 59 per cent over the next 25 years,鈥 says Miller, who teaches in the . 鈥淭his metric goes beyond carbon 鈥 it reflects a broader scale of human demand on nature.鈥

Looking closer to home, researchers note that Canada is rich in natural resources compared with other countries. Although Canadians only make up about 0.5 per cent of the global population, the country holds about four per cent of the planet鈥檚 biocapacity 鈥 the ability of Earth鈥檚 ecosystems to renew resources such as wood, food and clean water. 

Despite this advantage, Canada ranks eighth globally for per-capita consumption. In 2025, each Canadian used an average of 6.6 global hectares, roughly four times what would be sustainable at a planetary scale, and about double the per-person footprint of countries such as China or the U.K., notes Lo. Only the U.S. recorded a higher level.

鈥淐anada has a biocapacity advantage, but it is under pressure because of our large ecological footprint,鈥 says Lo. 鈥淐anada鈥檚 footprint is limiting opportunities for people elsewhere in the world to live well.鈥 

Trade is also central to Canada鈥檚 ecological impact. In 2025, Canada drew on 3.1 per cent of the planet鈥檚 renewable capacity to produce and export resource-intensive food and forest products. Each dollar of Canadian exports required roughly twice the natural resources of each dollar of imports. 

About 60 per cent of Canada鈥檚 domestic ecological footprint was tied to goods produced for consumption in other countries. Globally, more than 30 per cent of what the world produced in 2025 was traded internationally 鈥 more than double the share recorded in 1961. 

鈥淐anadians consume a lot, but the footprint associated with what we produce and export is even larger,鈥 says Miller. 鈥淯nlike countries whose ecological footprints are driven mainly by imports, Canada is a net exporter and ranks 10th globally on that basis.鈥 

He adds the national datasets can be used to examine biocapacity and ecological footprint at regional and municipal levels, and the initiative is expanding access to local data to support decision-making. 

鈥淲e are working to create more local, open-access data that leaders and policymakers can use,鈥 says Peri Dworatzek, partnership coordinator at the International Ecological Footprint Learning Lab. 鈥淭he goal is to empower countries, cities and individuals to better understand their impacts and identify where to go next.鈥 

The initiative has launched the first open-access ecological footprint dataset for all Ontario municipalities. 

The ecological footprint and biocapacity framework is widely used by governments and organizations worldwide, including World Wildlife Fund, which has incorporated the metrics into public tools and awareness campaigns. 

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Experiential learning illuminates science of changing climate /yfile/2026/04/24/experiential-learning-illuminates-science-of-changing-climate/ Fri, 24 Apr 2026 19:26:18 +0000 /yfile/?p=406098 Inside a first-year course at 91亚色, students are using hands-on modelling to predict global warming trends and understand the impacts for life on Earth.

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Students at 91亚色 are using the same climate models as scientists to explore how human behaviour could shape the planet鈥檚 future through an experiential learning approach developed by Joshua Thienpont, assistant professor in the .

Thienpont teaches , a first-year course focused on Earth鈥檚 weather systems and the drivers of past and current climatic change. Through the course's learning lab activities, students conduct climate modelling to assess how human influence may contribute to different climate scenarios 鈥 and how those scenarios could impact biodiversity.

鈥淚 think it鈥檚 critical to understand the nuances of how the planet is going to change in the not-too-distant future as a result of anthropogenic activities, so I try to expose them to what is under the hood of computer models,鈥 says Thienpont, noting each course iteration operates about five lab sections for a total of about 200 students.

To forecast how global warming will manifest by 2100, Thienpont鈥檚 students use the same sophisticated computer modelling as climate scientists, which draws on the laws of physics (conservation of mass, energy, momentum), fluid dynamics and chemistry and considers variables such as temperature, wind and humidity.

Using five CO2 emissions scenarios from the United Nations鈥 Intergovernmental Panel on Climate Change, students examine outcomes for each scenario, ranging from aggressive emissions cuts to high fossil fuel use. This data is used to analyze resulting risks, such as heatwaves, sea-level rise and species extinction.

鈥淚t鈥檚 a good way of taking things that are fairly theoretical and putting them into a real-world perspective,鈥 Thienpont says. 鈥淪tudents see just how variable the climate really is 鈥 if we can manage our emission activities to the point where we鈥檙e getting closer to more conservative scenarios, then the outcomes are much less drastic.鈥

In another lab assignment, Thienpont asks students to consider how climate change might impact them directly by examining how a warming planet may affect one of the world鈥檚 most popular agricultural products: arabica coffee.

The bean grows best in a cool, stable tropical climate at a moderate to high altitude and needs plenty of rain and light shade. Global warming is causing dry spells and irregular rainfall, which diminishes the yield and quality of Arabica crops. Farmers must keep planting further upslope 鈥 but mountains only go so high.

Thienpont鈥檚 students map how the land suitable for growing the beans could shift under diverse climate scenarios in countries such as Brazil, Costa Rica, Hawaii, Honduras and Nicaragua.

鈥淭hey learn how some of these countries, where coffee is one of their main domestic exports, have quite small land areas for cultivation, and that land size is expected to keep shrinking 鈥 in some cases significantly,鈥 Thienpont says. 鈥淚t demonstrates that the impacts of climate change are global. Everyone who enjoys a cup of coffee in the morning may feel this outcome.鈥

Thienpont says a nuanced understanding of climate change processes, outcomes and human influence helps prepare students for a range of science-related careers.

鈥淭he goal is to give them information that they鈥檒l be able to use, whether they go on to do further scientific exploration or work in environmental policy or city planning,鈥 he says. 鈥淭hey have a foundational understanding of the broad-scale environmental processes that impact us.鈥

With files from Sharon Aschaiek

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