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.
Did climate change wipe out the wooly mammoth? The fossil record may tell a different story of the mammoth's demise.
Usually we think of extinction as the end of the line for members of the domain of life. Interestingly, though, there are exceptions.
Though some of the oldest surviving felines, cheetahs have the genetic diversity equivalent to identical twins.
How did animals respond to the ice age? Ancient bison preserved in the Canadian arctic have given scientists a clue.
Great white sharks have a reputation for being the fiercest in the sea. But are they now the ones in danger?
Scientists have found evidence that by the time modern humans arrived in Europe, Neanderthals had already experienced an extinction scare.
It was one of the Earth's momentous times. Continents collided. Volcanoes erupted. Ocean currents shifted. Species ran amok.