Northern elephant seals sleep on the descent.
Climate change sends the growth of ancient trees into overdrive.
Human activity is behind mounting sea levels.
Swine see their world—if not themselves—in the mirror.
Even the spineless feel pain.
Did Pterosaurs sail, as well as fly?
People infect animals, too.
A Mayan mural shows how the other half lived.
In northern latitudes, Orion dominates the winter sky.
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)