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Knowledge & leadership for a sustainable future

Cutting-edge research, teaching, and public engagement on society’s evolving and urgent environmental challenges

News & Research

a crowd of people looking across a flooding road at a box truck stuck in the torrent of water

Rethinking Climate Migration

A new climate adaptation model introduced by Yale School of the Environment Assistant Professor Brianna Castro and a global team of researchers reframes “move or stay” decisions, introducing a third framework of “tethered resilience.”

Meet Tomorrow’s Climate Leaders

How can we persuade companies to implement step-by-step action plans to reduce emissions? What are the benefits of microgrids, especially in places that are particularly vulnerable to power outages and natural disasters? What are the most effective ways to gain community support for local water conservation initiatives? These are some of the issues being explored by Bekenstein Climate Leaders Annalisa Tarizzo, Haley Weinstein and Salma Huque ’27 MEM. Read more.

portrait of Huque

Salma Huque

'27 MEM
portrait of Weinstein

Haley Weinstein

'27 MEM

News in Brief

YSE Urban Scientist Receives Franklin Institute Award

Karen Seto, the Frederick C. Hixon Professor of Geography and Urbanization Science, has received a 2026 Franklin Institute Award for her work on urban issues.

The Institute honored Seto for her “pioneering work integrating satellite imagery, modeling methods, and social sciences to analyze the consequences of urbanization, land use, and global environmental change.”  The award is one of the oldest in the nation.

“The 2026 laureates embody the same remarkable spirit of curiosity, ingenuity, and discovery that defined our nation’s founding,” said Larry Dubinski, President and CEO of The Franklin Institute. 

Seto, a world renown geographer, was coordinating lead author of two U.N. climate change reports and co-led chapters on how urban areas can mitigate climate change. Her research developed the first forecasts of urban land expansion globally. 

Seto is one of eight recipients of the  award, which will be given during a ceremony April 30, 2026, in Philadelphia. 

"I’m deeply honored by the award, especially given past recipients in the category of earth and environmental science. I’m also grateful for all my students and postdocs in the lab. This award is a celebration of our collective work," Seto said. 

Direct Link

Franklin Institute Award

Karen Seto

Frederick C. Hixon Professor of Geography and Urbanization Science; Director of the Hixon Center for Urban Sustainability; Co-Director of the Yale Center for Geospatial Solutions

Five YSE Faculty Members Named to 2025 ‘Highly Cited Researchers’ List

Five Yale School of the Environment faculty members have been named to the world’s most influential researchers list by Clarivate Analytics, a company that compiles a list of scientists and social scientists whose papers rank in the top 1% of citations.

Included on this year’s list were: Mark Bradford, the E.H. Harriman Professor of Soils and Ecosystem Ecology; Xuhui Lee the Sara Shallenberger Brown Professor of Climate Science; Anthony Leiserowitz, the JoshAni-TomKat Professor of Climate Communication; Peter Raymond, the Oastler Professor of Biogeochemistry; and Karen Seto, the Frederick C. Hixon Professor of Geography and Urbanization Science. In total, 49 faculty members from Yale University made the list of 6,868 researchers worldwide.

Direct Link

Mark Bradford

E.H. Harriman Professor of Soils and Ecosystem Ecology

Xuhui Lee

Sara Shallenberger Brown Professor of Climate Science

Anthony Leiserowitz

JoshAni-TomKat Professor of Climate Communication; Director of the Yale Program on Climate Change Communication (YPCCC)

Peter A. Raymond

Oastler Professor of Biogeochemistry; Co-Director, Yale Center for Natural Carbon Capture

Karen Seto

Frederick C. Hixon Professor of Geography and Urbanization Science; Director of the Hixon Center for Urban Sustainability; Co-Director of the Yale Center for Geospatial Solutions

Degrees & Programs

The Yale School of the Environment offers a variety of degree programs, many of which can be customized to meet each student’s professional goals, and prepare them for careers in environmental science, management, and policy.

Master’s Program

Application Deadline: December 6, 2024

Apply to a Master's Program

Doctoral Program

Application Deadline: January 2, 2025

Apply to the Doctoral Program

Fast Facts

5 Year Aggregate

32%

International Students

32% of YSE students are from outside the United States.

5 Year Aggregate

82%

Receive Financial Aid

82% of master's students who completed the YSE aid application receive financial aid.

2023 Incoming Masters

21%

5+ Years Work Experience

21% of incoming master's students have more than five years of work experience.

5 Year Aggregate

20-62

Age Range

YSE students range in age from 20 to 62, with an average of 27, with an average of 3 to 4 years of professional experience.

5 Year Aggregate

24/31

Countries/States

Students come from 24 countries and 31 states and U.S territories.

Meet Our Students and Alumni

Peterson at a saltmarsh with a sparrow sitting on his finger

Giving Water Room to Roam

As intense rainfall has led to historic and persistent flooding in the Mississippi River Valley, Grant Peterson ’26 MEM is working to implement living shorelines, wetland restoration, and other nature-based solutions  that build resilience to flooding, conserve biodiversity, and enhance carbon sequestration.

Through workshops, interviews, and community partnerships, he emphasizes co-producing solutions with local residents, especially in coastal and flood-prone areas.

“Ecological restoration gives me hope because it is an inherently hopeful act,” Peterson said. “There are actionable solutions that can enhance wetland function and improve people’s lives — solutions that I can help implement.”

Teicher and Halpern

Driving Innovation in Coral Reef Restoration

More than 90% of coral reefs could disappear by 2050. While at YSE, Sam Teicher ’12, ’15 MEM and Gator Halpern ’15 MEM came up with a new idea for a for-profit startup called Coral Vita that could help reverse the grim trend. With assistance from the Yale Center for Business and the Environment, a £1 million Earthshot Prize and $8 million in Series A funding, the company has launched high-tech coral restoration projects in the Bahamas, Dubai, Saba, and Saudi Arabia.

“A lot of the initial inspiration for Coral Vita was taking what we learned at YSE in forestry and translating that into reef restoration work,” Halpern said.

Rhodes portrait
Bekenstein Climate Leaders

Olivia Rhodes ’25 MEM

Goal: Mitigate climate change through carbon dioxide removal

In her first semester at the Yale School of the Environment, Olivia Rhodes ’25 MEM took a class in carbon dioxide removal (CDR). The class changed the direction of her studies.

Rhodes arrived at YSE with a desire to focus on energy after a stint at a bioenergy firm, but when she learned of CDR’s potential for helping to abate greenhouse gas emissions, she saw an opportunity in a growing field.

“At the rate we're going without reducing our overall emissions, there's going to be a bigger need for it with every passing year,” Rhodes said. “CDR is an area that's very much still being created.”

Cody portrait
Bekenstein Climate Leaders

Sara Cody ’26 MEM/JD

Goal: Expedite decarbonization by helping to move clean energy projects to implementation on the legal side

Sara Cody entered Yale with the goal of pursuing a career in environmental litigation. However, her studies in the joint degree program at the Yale School of the Environment and Pace University’s Elisabeth Haub School of Law led her in a different direction. Her courses gave her a deeper understanding of environmental economics — and the inseparability of market forces and climate change mitigation, she said. 

“My focus has shifted to more affirmative decarbonization efforts,” Cody said.

After she graduates, Cody would like to work with clean energy companies on legal agreements that allow them to build out key environmental infrastructure projects.

portrait of Pokhrel outdoors

Financing Decarbonization 

At YSE, Hardik Pokhrel ’21 MEM focused on the intersection of finance and energy.

“One of the most impactful experiences I had was the ‘Renewable Energy Project Finance’ course — it remains incredibly relevant to what I do every day. Courses like ‘Renewable Energy and Energy Systems,’ combined with the school’s network and resources, prepared me to take on the challenges of decarbonizing some of the most emissions-intensive sectors of the economy.”

Pokhrel says he regularly applies the skills he acquired at YSE in his work at Sol Systems, a renewable energy firm delivering sustainable solutions for corporations, utilities, and institutions.

three people field-processing samples

Water Solutions Rooted in Equity

As a PhD student at the Yale School of the Environment, Helen Siegel ’19 MEM, ’24 PhD spent three years collecting groundwater samples across Pennsylvania, Ohio, and West Virginia to better understand the sources and risks of contamination in the northern Appalachian Basin. Her research revealed that while fracking wasn’t the primary culprit, pollution from waste spills, road salt, and mine drainage posed serious risks  which are shaped, in part,  by local geology. 

Now a postdoctoral fellow at The University of Texas at Austin, Siegel partners with underserved communities to study PFAS exposure and co-create practical, locally informed solutions rooted in equity.

Webster in a field of tall grass with woods in the background

Reimagining Parks for People and the Planet

For Maxwell Webster ’17 MEM, parks have always been more than places to play — they’re spaces for connection, creativity, and self-care. As the new director of New Haven Parks , he is leading efforts to reimagine parks as centers of climate resilience, food production, and community support, while preserving their role as beloved neighborhood gathering spots. Rooted in both personal experience and professional training from the Yale School of the Environment, his vision is focused on equity, adaptability, and meeting the evolving needs of New Haven’s diverse communities.

Cammack in a snowy wooded environment

Redefining Land Stewardship in Vermont

As program director for the Smokey House Center in Vermont, Walker Cammack ‘22 MF is helping redefine land stewardship by advancing research in forest farming, climate-adaptive maple syrup production, green building, and regenerative agriculture. His work emphasizes employing regional solutions — developed alongside local farmers, foresters, and researchers — to build ecological and economic resilience. 

“We’re trying to do real work that helps people on a very local and regional scale, which is so nuanced and often chaotic in these volatile times we’re existing in, and it feels like YSE prepared me really well to be able to handle that,” Cammack said.

Benedicta Frimpomaa Asiedu
Three Cairns Scholars

Benedicta Asiedu, Ghana

Goal: Advancing Ghana’s transition to a net-zero economy

Benedicta Asiedu ’25 MEM has witnessed profound economic transformation in her home country of Ghana. It is one of the world’s largest exporters of gold, and it exports agricultural goods, most significantly cacao, to global markets. Since 2007, when oil in commercial quantities was first discovered, Ghana has also become a producer and exporter of crude oil. These three commodities alone have helped the country move from the edge of economic collapse three decades ago to, as the World Bank declared in 2019, the world’s fastest growing economy. (This growth has since slowed.)

Richardson portrait
Bekenstein Climate Leaders

Colby Richardson ’25 MEM

Goal: Reducing corporate supply chain emissions

Vermont is the third-most forested state of the U.S. mainland, with approximately 4.5 million acres of forestland covering nearly 80% of its territory. After witnessing the destructive effects of mining activity on the state’s forests, Colby Richardson’ 25 MEM, who grew up in the rural town of Thetford, was inspired to study environmental policy in college.

Richardson spent several years working in environmental consulting and at an online renewable energy marketplace. He came to YSE with the goal of deepening his quantitative skills to build a business case for sustainability, and last summer he interned at The Coca-Cola Company, where he focused on the company’s sustainability strategy. After graduating, Richardson would like to continue working to reduce supply chain emissions.

Merrick portrait
Bekenstein Climate Leaders

Phoebe Merrick ’25 MEM/MPH

Goal: Quantifying and communicating the impacts of climate change on public health 

Phoebe Merrick believes that she can have the most impact on climate mitigation efforts by communicating more directly to the public about how climate change affects human health. Using the data visualization skills she learned at Yale, Merrick plans to pursue work in quantitative analysis and climate communication, helping to display data in ways that are accessible to the general public. 

“We talk about the economic reasons to mitigate climate change, but we don’t talk as often about the health benefits,” she said.  “I think that there's a place to move health communications to the forefront.”

McGlinchey on rocky coast of Ireland trying the local seaweed

Strengthening Regional Food Systems From Surf to Turf

Kelly McGlinchey ’23 MEM views  kelp not only as a nutrient-dense food option,  but also as a tool for building climate resilience and advancing sustainable coastal community development. As a student at the Yale School of Environment, she  co-authored a report, ‘Surf to Turf,’ that bridged the gap between regenerative agriculture and restorative aquaculture and directly informed local infrastructure planning in Stonington, Connecticut. Her research helped secure a $172,000 USDA grant to expand kelp processing capacity, benefiting both land and sea farmers. Now a sustainability strategist at Quantis, McGlinchey continues to advise global food brands while remaining deeply committed to strengthening regional food systems through partnership, innovation, and place-based solutions.

Iyer portrait
Three Cairns Scholars

Mahica Iyer, United Arab Emirates

Goal: Engage in sustainable business and development projects that empower local communities

Ever since she was a child, Mahica Iyer ’25 MEM has straddled two worlds: She grew up amid the glittering towers of Dubai, UAE. The community in her hometown of Mumbai, meanwhile, experienced frequent power outages, a scarcity of clean water, and poor waste management. Iyer later attended college in Illinois and then went on to work as a consultant in supply chain sustainability.

In the Media

Explore Big Sky

Fort Peck’s vision for ‘endless’ buffalo prairie

Florencia Montagnini
The New Republic

A Ray of Hope Amid the Climate Information War

Anthony Leiserowitz
Eos

How can we tell if climate-smart agriculture stores carbon?

Savannah Gupton, Mark Bradford, Alex Polussa, Sara E. Kuebbing, and Emily E. Oldfield

Centers, Programs, and Initiatives

Climate Ready Tools, Green City Tools, Built Environment Tools, and Healthy City Tools
Hixon Center for Urban Sustainability

60+ Tools

Twenty-first century cities need practical solutions to ensure a sustainable, resilient future for their citizens. The Hixon Center for Urban Sustainability offers interactive toolkits practitioners can use in adapting solutions to meet the challenges facing existing cities as well as those not yet built.

Explore the Toolbox