高湿和低温改变了COVID-19在巴西的传播，但影响不大。
Alaska
Posted inFeatures
Hunting for Methane Hot Spots at the Top of the World
A visit to an Alaskan wetland with some of the world’s highest lake marsh methane emissions brings scientists one step closer to understanding the phenomenon.
Posted inENGAGE, News
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 inResearch Spotlights
Neural Networks Map the Ebb and Flow of Tiny Ponds
Ponds play an outsized role in carbon emissions, but their size makes them hard to track. Enter machine learning.
Posted inNews
Geohazard Education Trainings Foster Resilience in Rural Alaska
National Science Foundation-funded teacher and community workshops boost disaster preparedness optimism among coastal Alaskan educators, whose communities face an array of natural hazards.
Posted inEditors' Highlights
Under Pressure: Recording Earthquakes at and Below the Seafloor
Cabled ocean-floor observatories record ground shaking and pressure variations, which contribute to early warning systems and give us a unique view of the ocean–crust coupling.
Posted inEditors' Highlights
The Burning Tundra
As wildfires blaze through the Arctic, scientists examine the role of landscape characteristics on wildfire ecosystem responses in northern aquatic ecosystems.
Posted inFeatures
Seismic Sources in the Aleutian Cradle of Tsunamis
Research over the past decade in Alaska’s Aleutian Islands has offered surprising insights into the pulses of great earthquakes that generate dangerous, often long-distance tsunamis.
Posted inNews
Alaskan Glaciers Advance and Retreat in Satellite Imagery
Researchers tracked 19 maritime glaciers in Kenai Fjords National Park over several decades and found that tidewater glaciers tended to experience less ice loss than other types of glaciers.
Posted inFeatures
How an Unlikely Friendship Upended Permafrost Myths
“Beautifully long arguments” between an American scientist and a Russian researcher helped clarify several fundamental assumptions about permafrost thaw.