Analysis of trash mounds shows how a regional hub collapsed after the onset of the Late Antiquity Little Ice Age.
Indoor temperature and moisture in the U.S. is closer to climates in Africa than to anywhere else on Earth.
Researchers match recent and future climates to show what American cities will be like in 60 years.
The Ross Ice Shelf appears to be melting in previously unknown ways. The same mechanisms could be melting other giant ice shelves, too.
It’s now more common to see multiple giant wildfires burning at once, straining firefighting resources, scientists say.