And the scale of decline has accelerated since the year 2000.

Through fossilized tooth enamel, scientists are reconstructing the diets and landscapes that existed millions of years ago. We really are what we eat.

Streamflows the West relies on for drinking water and farms used to follow a fairly predictable arc as winter snow melted. Rising temperatures are changing that.

Will this permafrost be perma-lost?

The 2026 water year has been anything but ordinary. In fact, its snow drought has few parallels in recent history.

A new report finds 325 migratory fish species in urgent need of help, including some of the world’s most iconic freshwater giants.

The current Colorado River negotiations process includes all five of the most common sources of conflict in any process seeking compromise.

Scientists mapped the evolution of 140 glacial lakes in Alaska and found a way to tell how much larger and destructive they can get as their glaciers melt.

The Southern Plains states get a severe drought about once a decade, but long-lasting droughts lately have been leaving farms, rangeland and water sources with too little time to recover.

Grist reports that restoring rivercane in Alabama could mitigate floods, improve ecosystems, and revive Native cultural practices.