Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

Canadian Prime Minister Mark Carney's landmark speech tells us a lot about the future of climate and energy geopolitics.

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all scientists agree.

Scientists calculate that last year was the third-hottest on record, following 2024 and 2023. Several climate monitoring teams say these last three years approach the warming limit set by the 2015 Paris climate agreement.

"Atmospheric greenhouse gases have steadily increased over the last 10 years."

Our planet has experienced dramatic climate shifts throughout its history, oscillating between freezing "icehouse" periods and warm "greenhouse" states.

The annual gathering of top business leaders and policymakers used to be a center of the global climate movement. Things are much more complicated now.

Research shows Americans are increasingly fretting about disasters — and even the end times. Hiding in a cave might actually protect you.

Climate change has a wide range of effects on wildlife. It affects seasonal migration, reproduction times, body size and mass, and disrupts ecological processes, thereby posing challenges for the populations of some species.

For a long time, people pushed climate change and biodiversity loss to the sidelines, seeing them as distant problems for scientists, activists, or future generations, while forests vanished far away,