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.
Much of the world's farmland is already at risk from palmer amaranth. The threat could spread further north as the climate warms.