July 24, 2019
The Climate Epochs That Weren’t
Climate scientists often invoke the Medieval Warm Period and the Little Ice Age as natural worldwide climate swings predating human influences. They may not have worked the way we think.
July 24, 2019
Climate Change Could Revive Medieval Megadroughts in U.S. Southwest
New research by Columbia scientists examines the factors that caused severe, long-lasting droughts in the Southwest and suggests climate change may bring a new round of megadroughts.
July 22, 2019
Robots Roaming in Antarctic Waters Reveal Why Ross Ice Shelf Melts Rapidly in Summer
A new study reveals how local factors influence the Ross Ice Shelf’s stability, refining predictions of how it will change and influence sea rise in the future.
July 22, 2019
How Did Africa’s Grasslands Get Started?
A new study led by Columbia scientists examines why, millions of years ago, grasses with a new way of doing photosynthesis displaced previously dominant plants, shrubs, and trees.
July 17, 2019
By Cutting Ozone Pollution Now, China Could Save 330,000 Lives by 2050
Climate change could worsen China’s already bad ozone pollution problem — but a new Columbia University study shows that it doesn’t have to be that way.