Sometimes rivers split into branches in unusual ways, reflecting the complexity of Earth's water system on land and how much we still must learn about it.

Krill is considered to be the largest animal biomass in the wild on Earth and is an important prey species for baleen whales ...

From the Atlantic to the Pacific, beachgoers are being warned to stay out of the water as a surge of hazardous ocean ...

Microplastics are building up in human brains, blood, reproductive organs, and more. A new study suggests you ingest more ...

Land water is vanishing faster. Earth's surface struggles to recover, risking food, water, and climate stability.

Early predictions point to an active hurricane season in the Atlantic Ocean. Here's what local residents should know.

UCLA researchers say California and other states aren't recycling enough water. They recommend reusing much more to ease ...