It was one of the Earth's momentous times. Continents collided. Volcanoes erupted. Ocean currents shifted. Species ran amok.
Cheetahs have survived devastating climate change and a resulting genetic bottleneck.
The Wooly mammoth population on St. Paul Island became extinct approximately 5,000 years later than the Wooly mammoths of mainland Alaska.
Coextinction is an important consideration in conservation efforts.
Malaria has existed in insects for at least 100 million years.
A world without them might not be as nice as we might think...
Archaeologists discover the fossil of a monstrous rodent that lived eight million years ago.
Technology enables humans to kill prey faster than they can replenish their population, putting many species at risk of extinction.
Human behavior is placing at least a third of Earth's species at risk of extinction.
Research suggests White Nose Syndrome in bats will have bleak ecological and economic consequences.