A major global review finds that climate change is intensifying more rapidly in mountain regions than in nearby lowland areas. Scientists warn this uneven warming could have serious consequences for billions of people who live in or depend on mountain environments for water, food, and stability.

While most of the world's glaciers are retreating as the climate warms, a small but significant population behaves very differently—and the consequences can be severe. A team of international scientists,

Scientists around the world have been scrambling to fill in gaps and make space on their servers for American data sets, before more of them suddenly disappear. Polar peace, and the scientific collaboration it’s enabled,

The Trump administration is urging other nations to press a tiny Pacific island country to withdraw a United Nations draft resolution supporting strong action to prevent climate change, including

As glaciers around the world continue to shrink and disappear, they are drawing more visitors than ever, not only for their beauty but for what they have come to represent in an era of climate change.

As the Games get started in Italy, experts discuss how weather and changing climate affect the competition and future site selections.

Human-induced climate change, along with land-use shifts and budget cuts, likely worsened recent wildfires in Argentina and Chile that are threatening some of the world's oldest trees, an analysis has found.

Warming temperatures are threatening the future of all outdoor snow-based sports in the Olympic Games. Is it only a matter of time before certain Olympic events disappear?