A study by climate scientists at Columbia's Earth Institute found that Extraordinarily hot summers — the kind that were virtually unheard-of in the 1950s — have become commonplace.

New research by Michael Shadlen of Columbia University's Mortimer B. Zuckerman Mind Brain Behavior Institute pinpoints the a-ha moment when information enters the human consciousness.

So far, no one in the scientific community — including David Kipping and Alex Teachey, astronomers at Columbia University — has been able to produce an unambiguous detection of an exomoon. But it's not for lack of trying.

What would happen if Earth moved closer to the sun? Catastrophe, Lamont-Doherty Earth Observatory climatologist Jason Smerdon tells The New York Times.

A study by Columbia researchers suggests rising temperatures will have a dramatic impact on aviation; airports in Dubai and New York City are expected to see some of the worst effects.

Radley Horton, a climatologist at Columbia's Lamont-Doherty Earth Observatory, predicts that by the end of the century, some cities could see three times more days with temperatures above 90 degrees.

A project that paid people in Ugandan villages not to cut down trees on their land delayed carbon dioxide emissions — a benefit to society that's more than double the project's costs, says Shahid Naeem, an ecologist at Columbia.