Hakhamanesh Mostafavi, an evolutionary biologist at Columbia University, led a study that suggests variants that shorten life are being selected against.

Park Williams, a Columbia University climate scientist, says wildfires are a “canary in the coal mine” for the effects of climate change.

Suzana Camargo, a Columbia University atmospheric scientist, discusses Hurricane Irma and the role climate change played in making it the strongest hurricane ever recorded in the Atlantic.

Adam Sobel, director of Columbia University’s Initiative on Extreme Weather and Climate, discusses what can scientifically be chalked up to climate change, and what’s just a normal weather pattern.

This past weekend, North Korea conducted another nuclear test. This is what a seismic expert Paul Richards really thinks is going on.

Some of the health dangers from Hurricane Harvey's widespread flooding will be subtler and longer-term, said Irwin Redlener, director of the National Center for Disaster Preparedness at Columbia University.

Researchers from Columbia University and the Champalimaud Center for the Unknown in Lisbon, Portugal, say they have discovered an “activity map” that the brain uses to guide animals’ movements.