A little dirt makes a lot of difference.
Giraffes have been undergoing a silent extinction.
Sharks are declining at an alarming rate.
The planet's largest shark may have been killed by a supernova.
A 40,000-year-old baby horse recovered from Siberian ice may help de-extinct species.
Climate change was unforgiving with the Neanderthals.
For some species, chilling is the best survival strategy.
The findings go against commonly-held wisdom today.
The rarest ape in the world is slowly becoming forgotten.
Ancient volcanism offers a glimpse into the future effects of climate change.
At this rate, in a few centuries, the world's largest mammal could be the domestic cow.
The dinosaurs started and ended with a bang.
Turns out eating all the mammoth wasn't that good of an idea.
The ocean will be less without them.
The extinction event that wiped out the dinosaurs left many empty niches for the mammals' taking.
Earth's average surface air temperature droppped by as much as a staggering 26 degrees Celsius.
Humans weren't necessarily better than the Neanderthals, they just moved around more.
The amazing story of an insect presumed dead for decades.
Big and small animals are the most threatened by extinction.