DNA thought to be from an extinct polar bear in the Himalayas might actually belong to something else.
Earth could see three quarters of its animal species go extinct within the next few decades.
The evolutionary biologist has suggested sending a record of our civilization out in to space.
The disappearance of the world's biggest shark may have enabled whales to grow to huge sizes.
One of the last remaining northern white rhinos has died leaving only six left alive in the whole world.
The extinct sthenurine kangaroo weighed a quarter of a ton and looked a bit like a giant bipedal rabbit.
A species of rat thought to be extinct has been rediscovered near the Incan city's ruins in Peru.
Scottish scientists believe that the dinosaurs were wiped out by a series of consecutive disasters.
An ancient organism believed to have died out 4 million years ago has been found near New Zealand.
Nazi scientists had once planned to use selective breeding to bring an extinct cow species back to life.
The periodic reversal of the Earth's magnetic field may play a key role in mass extinction events.
Scientists have warned that we may soon be facing one of the largest mass extinctions in Earth's history.
Early humans may have relied on domesticated dogs to help them hunt down and kill woolly mammoths.
Health officials will be meeting next week to decide if the virus should be destroyed once and for all.
Were we solely responsible for the species' extinction or were there other factors at work ?
Could a disc of dark matter on the galactic plane have triggered an apocalyptic asteroid impact ?
Researchers have rediscovered a species of deer thought to have disappeared over 85 years ago.
The unique inhabitants of the Indian Ocean island Madagascar are on the verge of disappearing forever.
An analysis of plant illustrations within the text has turned up links to an extinct Mexican language.
The extinction of several large mammal species could pave the way for super-sized rats.