As the midpoint of the year approaches, several climate records have already been broken. Arctic winter sea ice extent reached a record low. Several countries saw record-breaking winter heat waves. And more than 150 million acres have already burned globally in wildfires.
Climate Change
Posted inNews
Urban Methane Emissions Are Rising, Despite Cities’ Pledges
Eyes in the sky could help cities get on track to decrease emissions of the potent greenhouse gas—and monitor whether their efforts are working.
Posted inNews
This Arctic Atlas Shows Where Oil and Gas Activities Overlap with Wildlife and Indigenous Communities
To slow climate change, the world must keep its fossil fuels in the ground. New maps of Arctic activities show where resources should stay put.
Posted inThe Landslide Blog
The 10 August 2025 landslide and tsunami at Tracy Arm fjord in Alaska
A wonderful new paper on the huge Tracy Arm landslide and tsunami will have profound but challenging implications for the management of risk in an age of increased tourism and rapid climate change. The journal Science has published an excellent new paper (Shugar et al. 2026) that examines the extraordinary 10 August 2025 landslide and […]
Posted inNews
The Forensics of a Skyscraper-Sized Tsunami
A landslide in Tracy Arm Fjord in Alaska created the second-largest tsunami on record. A new analysis links this abrupt event to the retreat of a glacier and, ultimately, to climate change.
Posted inResearch & Developments
Temperatures in Nearly All Major U.S. Cities Have Warmed Since First Earth Day
After more than half a century of Earth Days, one planetary challenge—climate change—threatens our planet more than ever.
In 1970, the year Sen. Gaylord Nelson, D-Wisc., organized the first Earth Day events, the annual average concentration of carbon dioxide in the atmosphere was 326 parts per million. In 2025, it was 31% higher, at 427 parts per million.
Posted inNews
Location, Location, Location: The “Where” of Reforestation May Matter More Than the Extent
A new study finds that focusing reforestation efforts in strategic locations, such as the tropics, can accomplish global cooling levels comparable to less strategic reforestation efforts covering twice as much area.
Posted inEditors' Highlights
More Braided Rivers from Increasing Flow Variability
Global analysis of satellite data and river flow records show that higher flow intermittency after climate change may lead to an increasing number of threads in braided rivers, thus impacting ecosystems.
Posted inEditors' Vox
Can Any Single Satellite Keep Up with the World’s Floods?
How well does our current satellite fleet capture the world’s major floods? Scientists turn to the Dartmouth Flood Observatory record for a data-driven answer.
Posted inResearch Spotlights
Mediterranean Mussel Farming Could Collapse by 2050
New experiments suggest that ocean warming and acidification are on track to slash both oyster and mussel farming yields.