Climate change sends the growth of ancient trees into overdrive.
Northern elephant seals sleep on the descent.
Sea stars grow faster in warmer, acidified water.
Even at an early evolutionary stage, bird-like dinosaurs occupied different niches in the same ecosystem,
Dung beetles use light from the MIlky Way to find their way
Recently identified subspecies ranges farther than first imagined: across Africa.
An archaeologist ponders the fate of Hoover Dam