Extinction

Save the river porpoise, save China.

Sometime between 300 million and 600 million years ago, a massive space rock split in two before colliding with the planet.

Fossils left behind by a penguin that was hunted to extinction reveal a remarkably fast turnover in species occurred after Polynesians settlers wiped out New Zealand's weird island wildlife.

During the worst mass extinction in Earth's history, the soil may have been as acidic as lemon juice, new research shows.

Life didn't immediately rebound after the world's greatest extinction, but cropped up in fits and starts.

New, more precise dates for India's Deccan Traps eruptions could revive the idea that the massive set of lava flows caused the Cretaceous-Tertiary (K-T) extinction.

A new study of fossil records estimates that the 60-foot-long (18 meters) Megalodon shark went extinct 2.6 million years ago.

With more than 50 percent of wildlife disappearing in the last 40 years, something needs to change.

On the one-hundredth anniversary of the last passenger pigeon's death, reflections on the loss of darkened skies.

A new fossil find reveals that a family of lizardlike reptiles survived the Cretaceous extinction that killed the dinosaurs and lived for millions more years in South America.

Shark Week can be terrifying, but sharks have much more to fear than we do.

Nothosaurs, ancient marine predators that paddled the Mesozoic oceans, swam with a rowing motion that dredged up prey, new track marks reveal.