When the Rio Grande figures in US news reports, it’s usually in relation to stories about immigration, drug trafficking or trade. But the river is also an important water source – and it’s shrinking.

Saltwater intrusion is bad for human health, ecosystems, crops and infrastructure. Here’s how seawater can move inland, and why climate change is making this phenomenon more frequent and severe.

Arizona is considering a multibillion-dollar desalination project to address its urgent water needs. Three water experts call for a go-slow approach and point to Israel as a role model.

A lack of weather radar stations means Africa is being hit hard by extreme weather events.

During drought, soils release more volatile organic compounds into the atmosphere, researchers report.

A new device gets power from sunlight to extract molecules from the air and convert them into drinking water.

Breaching the Kakhovka Dam and reservoir had all the hallmarks of a scorched-earth strategy. Two expert observers of the Russia-Ukraine war explain this event’s destructive long-term effects.

Climate change threatens longer and more severe droughts. What will it mean for our diets?

By a narrow margin, the Supreme Court has ruled against the Navajo Nation in a case over water rights in the drought-stricken US Southwest.