How did massive volcanic eruptions, inland seas, and land bridges pave the way for life?
Wolves lack the facial muscles required to raise their eyebrows—a feature that makes dogs especially endearing to people.
Some African mole-rats seem to tolerate the burn of spicy plants or biting insects that cause most other animals excruciating pain.
These crafty birds might be capable of interpreting and internalizing the emotions of others.
The rise of bed bugs preceded modern humans by at least 100 million years. They survived the extinction that killed the dinosaurs. Could they outlive us all?
A sweeping genomic study expands the equine family tree and pinpoints how humans might have reshaped the equine gene pool.
Dogs might be less inclined to be generous to their pack mates, hinting that domestication hasn’t necessarily improved canine social skills.
Fossilized fish uncovered in North Dakota appear to preserve the catastrophic fallout of the asteroid impact that wiped out the dinosaurs.