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.

The New York Times reported that the National Park Service removed a sign warning about the effects of climate change on the historic Fort Sumter site.

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

Go behind the scenes with executive editor Vernon Loeb and fisheries and aquaculture reporter Johnny Sturgeon as they discuss heat, health and opportunity in the world’s oceans.

As habitats and hosts keep vanishing, the bloodsuckers are turning to us for a free meal.

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.

Last year was the third hottest on record, with the World Meteorological Organization this week warning that 2025 continued a run of “extraordinary” global temperatures. The EU has said the Paris climate agreement of 1.5C could be broken before 2030, a decade sooner than expected.

An unusually brutal winter storm is set to pummel more than 160 million Americans from Friday, as a stretched "polar vortex" sends a devastating blast of Arctic air, bringing heavy snows and freezing rains.