In a new study, astronomers show how gas expelled in the merger of two small galaxies can linger across vast distances for billions of years, where it may eventually feed gas to more massive galaxies to make new stars.

Gavin Schmidt, Sidney Hemming, and Richard Seager were named 2018 Fellows of the American Geophysical Union, the world’s largest earth and space science society.

A team of Columbia researchers show that a widely used chemical tracer, combined with a cutting-edge microscope, can track metabolic changes within the living cells of animals.

The Paraguay River is an essential lifeblood for the landlocked country that shares it name, but it can also be the source of deadly and costly floods. Now scientists are one step closer to predicting the likelihood for heavy rain weeks ahead of time.

Three scientists from Columbia’s Lamont-Doherty Earth Observatory have received prestigious 2018 Section awards from the American Geophysical Union, the world’s largest earth and space science society.

The changes to the Endangered Species Act currently proposed by Congress and the Trump administration are dangerous for biodiversity. Here’s what you need to know.

As the world population continues to grow, global demand for food could increase dramatically by 2050. Yet the impacts of climate change threaten to decrease the quantity and quality of our food supplies.