Contagious laughter, yawns, and moods offer insight into empathy’s origins.
An Internet guide to exploring the mysteries of sunspots
A strange attacker threatens pregnant mussels.
Pitcher plants supplement meat with manure.
Glue-making provides evidence of advanced cognition.
Pointy cells give insects traction.
The time it takes to replace feathers might limit birds' body size.
Scientists peer back in time to map the continents' ancient arrangements.
It's been raining less than we thought.
Fossil find shows social behavior of trilobites.
Sea stars grow faster in warmer, acidified water.
Caves are among the predators’ favorite spots.
The brain doesn't much care whether an experience is real.
Humans will never win a sprint against your average quadruped. But our species is well-adapted for the marathon.
Hear author Xiaoming Wang interviewed by Vittorio Maestro, Editor in Chief of Natural History. (MP3, 17 minutes)