Two-photon imaging captures chemical signaling between live mouse neurons on a millisecond timescale.

Sargassum is piling up on Caribbean beaches, smothering nearshore ecosystems, driving off tourists, and compelling researchers to figure out why it’s suddenly so abundant.

A 3-D printed prosthetic hand moves by reading the signals in forearm muscles.

See a tiny, jellyfish-like robot swim, burrow, and carry beads.

Marine biologists identify smalleye stingrays using the white spots on their backs.

Hear seals imitating human sounds and melodies.

Scientists create a soft-bodied robotic fish that pumps synthetic blood and swims on its own.

Watch a hawk close in on a target.

Watch penguins hunting from their point of view.