A previously unknown extinct tortoise was revealed in an investigation on these giants' evolutionary history.
A genetic study has revealed the existence of a previously unknown hunter-gatherer group that lived in Siberia upwards of 10,000 years ago.
If these organisms are eating viruses in nature, it could change the way scientists think about global carbon cycling.
Astronomers detected 400 previously unknown black holes in a new X-ray survey of dusty galactic centers.