![](https://cdn.cnn.com/cnnnext/dam/assets/200812162620-01-sasha-ancient-finds-super-tease.jpg)
Woolly rhinos went extinct at the end of the last ice age in Siberia about 14,000 years ago when the climate suddenly began to warm, according to a new study based on ancient DNA evidence. Previously, it was believed that early humans hunted them to extinction.