U.S. cities are losing some 36 million trees every year, but hardier species can restore their canopies.
Climate Change
Posted inNews
Ten Rivers Facing Pollution, Development, and Climate Change—And Policies That Can Help
An annual report highlights 10 waterways that have arrived at forks: where public support could determine whether they receive protection.
Posted inNews
As the Arctic Warms, These Rivers Are Slowing Down
The Arctic is warming up, but instead of large rivers migrating faster, they’re actually slowing down because of shrubification.
Posted inEditors' Vox
What We Know and Don’t Know About Climate Tipping Elements
As climate change continues, parts of the Earth system such as ice sheets, frozen soils, or the Amazon rainforest could shift—some quickly, some slowly—after crossing key thresholds or tipping points.
Posted inNews
Wildfire Smoke Destroys Ozone
Smoke aerosols from large wildfires are the perfect reaction surface for chlorine chemicals, speeding their transformation from ozone-friendly forms to reactive ones.
Posted inNews
Wisconsin Stalagmite Records North American Warming
A speleothem has revealed rapid periods of warming across the interior of the continent during the last glacial period, corresponding to similar events recorded in Greenland ice.
Posted inScience Updates
Envisioning a Near-Surface Geophysics Center for Convergent Science
A recent effort identified how a proposed near-surface geophysics center integrating research and teaching could address critical challenges and promote community engagement and cultural change.
Posted inNews
Back-to-Back Hurricanes Could Become Common by 2100
New research shows back-to-back hurricanes could strike the United States every few years by 2100.
Posted inNews
Deep-Sea Sand and Where to Find It
Ancient underwater avalanches carried sand into the ocean’s abyss during a time when some least expected it.
Posted inEditors' Highlights
Scotland’s Last Glaciers Cause a Shift in an Old Paradigm
Cosmogenic geochronology of Scotland’s vanished glaciers indicates that the paradigm of weakened North Atlantic currents causing a rapid regional cooling is no longer valid.