London's mayor praised the beavers, who are already having a noticeable impact.

New claims challenge inconsistencies in one of the foundational principles of physics.

The humble bird may help scientists understand how experts learn to see disease.

The study probes how flexible the dreaming body can feel.

San Carlos Lake’s collapse shows how fast stressed reservoirs can turn lethal.

An ancient, massive black hole blinked, revealing a surprisingly mature 'cosmic engine.'

A camera trap confirms a critically endangered species in eastern Nepal.