Scientists estimate that Indonesia will lose its two remaining glaciers by 2030—a warning for glaciers around the world.

Researchers have solved a long-standing atmospheric puzzle: how rising carbon dioxide cools the stratosphere even as it warms Earth’s surface and lower atmosphere.

As glaciers retreat in warming regions, the risk of related hazards can increase, and improved monitoring may help reduce some of those dangers, according to a new study.

We invite readers to share their most pressing questions about climate, science and sustainability.

Raymo received the award for her pioneering development of hypotheses that explain climate change across Earth’s history, and her educational leadership in the Earth system sciences.

Kaplan studies the ways ice sheets, mountain glaciers, climates and landscapes changed in the past.

Laramie Jensen’s interest in inorganic and analytical chemistry led her to the ocean. And then to the North Pole.

Aynsley Kretschmar, a soon-to-be graduate of the M.A. in Climate and Society program, reflects on the skills she’s gained from her time at Columbia, as well as what she’s most excited about for her future.