Lamont Paleoclimatologist Maureen Raymo Receives the 2026 Nemmers Prize – Image for illustrative purposes only (Image credits: Flickr)
Humanity’s push to mitigate climate change draws crucial lessons from deep time, where natural forces once reshaped the planet’s atmosphere over millions of years. Paleoclimatologist Maureen Raymo, whose research illuminates these processes, received the 2026 Nemmers Prize in Earth Sciences from Northwestern University.[1][2] The award celebrates her ability to connect Earth’s geologic past with strategies relevant to contemporary environmental pressures. Announced on May 6, 2026, it highlights how understanding long-term climate drivers can inform efforts to stabilize today’s rapidly warming world.[3]
Recognizing Excellence with the Nemmers Prize
The Nemmers Prizes, awarded biennially, honor scholars outside Northwestern for transformative contributions to knowledge. Established through a $14 million gift from brothers Erwin and Frederic Nemmers, the awards carry substantial stipends and foster academic exchange. Recipients engage with university communities via lectures and seminars, amplifying their impact.[1][3]
In Earth Sciences, the prize totals $300,000, one of the field’s largest honors. This year’s recipients spanned disciplines: Jean-Laurent Casanova in medical science, John Corigliano in music composition, Whitney K. Newey in economics, Andrei Okounkov in mathematics, and Raymo in Earth Sciences. The selection process identifies leaders whose work endures and innovates analytical approaches.[2]
Raymo’s Pioneering Hypotheses on Climate Evolution
Raymo earned acclaim for hypotheses that trace climate change across Earth’s vast history. She integrated insights from Earth’s solid, liquid, and gaseous realms to reveal how planetary systems interact and evolve over geologic timescales. Her efforts advanced comprehension of forces driving climatic shifts long before human influence emerged.[1]
Central to her legacy stands the Uplift Weathering Hypothesis. This framework posits that tectonic uplift, such as the rise of the Himalayas and Tibetan Plateau, intensified chemical weathering. The process drew down atmospheric carbon dioxide, fostering global cooling and the onset of ice ages. It weaves together plate tectonics, mountain building, atmospheric dynamics, ocean biogeochemistry, the carbon cycle, and climate regulation.[1][4]
- Plate tectonics and mountain uplift accelerate rock exposure.
- Chemical weathering consumes CO2, altering ocean and atmospheric chemistry.
- Reduced greenhouse gases trigger cooling, enabling ice sheet expansion.
- These feedbacks operate on million-year scales, contrasting rapid modern warming.
Leadership in Science and Education
Beyond research, Raymo shaped institutions pivotal to Earth sciences. She served as director of Lamont-Doherty Earth Observatory from 2020 to 2023 and co-founding dean emerita of Columbia’s Climate School. As G. Unger Vetlesen Professor of Earth and Climate Science, she mentored emerging scientists, many of whom now lead in the field.[1][4]
A member of the U.S. National Academy of Sciences, Raymo reflected on the prize: “It’s really incredible to have my work acknowledged in this way. I’ve been reflecting on the many special collaborators and experiences I’ve had over my career, including a talented cohort of post-docs who’ve gone on to build successful careers of their own.” Her emphasis on collaboration underscores the collective effort behind climate insights.[1]
Raymo’s analyses of deep-sea sediment cores produced records of geochemical and paleoclimatic shifts. These reconstructions span tectonic, orbital, and millennial scales, refining timelines for Earth’s history and past sea levels. Such precision aids models projecting future changes under warming scenarios.
Bridging Past Patterns to Present Challenges
Raymo’s findings resonate amid urgent debates on carbon sequestration and sea-level rise. Her hypothesis on weathering-inspired CO2 removal echoes proposals for enhanced rock weathering as a geoengineering tool. By quantifying ice volume fluctuations in warm periods like the Pliocene, she bolsters predictions for vulnerable coastal populations.[5]
During the 2026-27 academic year, Raymo will visit Northwestern’s Department of Earth, Environmental and Planetary Sciences. There, she plans lectures and interactions to share methodologies and data. Students and faculty stand to gain from her interdisciplinary approach, potentially sparking new research avenues.
Raymo’s recognition arrives as societies worldwide confront escalating climate risks. Her career illustrates how probing ancient records equips us to navigate uncertain futures, reminding that effective solutions often root in the planet’s own history. The enduring influence of her mentees promises continued progress in this vital domain.