More than 90% of Madagascar's lemurs face extinction. Losing them will mean a loss of the valuable function they serve to the forests in which they live.
Scientists are working to bring this large, unique frog back from the brink of extinction.
The idea that the dinosaurs were wiped out by a giant asteroid was ridiculed – until the remains of a giant crater were found deep underground.
The extinction threat you haven't heard of: several South American birds teeter on the brink of existence due to habitat loss. And history is not the best guide for how to save them.
Carbon dioxide is rising faster than any time in the past 66 million years. Rapid rises in the past have been linked to mass extinctions.
Scientists have uncovered one of the most detailed and well-preserved nervous system fossils ever found.
Recent bushfires have not just destroyed human lives and property, but pushed some species further down the path to extinction.
Giraffes are facing a silent extinction and need conservation strategies to help them.
Why we won't see a Planet of the Apes when humans are gone.
Our entire knowledge of one of Australia's extinct ancient giant birds is flawed because experts have been looking at remnants of the wrong egg the whole time.
Was there a 'dinosaur Pompeii' in China? New research questions the claim.
When 100-year-old giant tortoise Lonesome George died in 2012, the world thought his species was lost forever. We went to the Galápagos Islands looking for 'extinct' tortoises – and we found them.
Australia may have reputation for vast areas of wilderness, but in reality the continent's ecosystems have been chopped and diced. Now we need to protect what's left.
Their flimsy chances rely on the eggs and sperm from the remaining three elderly animals, combined with frozen DNA from dead rhino.
Sometimes extraordinary species really do appear to come back from the dead.
A 21st century government would put the environment on at least an equal footing with the economy. That means no more extinctions, and no more putting ourselves before wildlife or future generations.
Many ecosystems have changed so radically that it is no longer possible to restore them to what they once were and in other situations it is not appropriate.
Grey squirrels hate these reclusive, cat-sized predators.
How will climate change affect life in the oceans? New research shows that the answer is likely good and bad.
Analysis of extinction rates over the past centuries shows that humans are causing the sixth mass extinction in the history of the Earth.