Ancient humans migrated out of Africa to escape a drying climate, says a new study coauthored by Peter deMenocal, a climatologist and Columbia University Dean of Science.

Scientists associated with the Columbia University Initiative on Extreme Weather and Climate are investigating how future storms might impact the heavily-populated coastal city of Mumbai.

A new climate study shows that some countries in sub-Saharan Africa may be underestimating the impact of their malaria control activities, while others may be underestimating their success.

A thousand years ago, powerful Viking chieftans flourished in Norway’s Lofoten Islands. In an environment frequently hovering on the edge of survivability, small shifts in climate or sea level could mean life or death.

Three oceanographers from Columbia's Lamont-Doherty Earth Observatory discuss how changes in ocean temperatures and chemistry impact marine life and food security.