For decades, researchers have tried to decode ancient, extremely fragile DNA. Under the leadership of Danish geneticist Eske Willerslev, they succeed in decoding DNA from long-extinct animals.

With breathtaking animations, the film takes us back to a time when the Arctic was covered in forests and camels roamed Greenland. When the carbon levels in the atmosphere were similar to today. A picture of our own climate future? What can the ancient genetic codes tell us about the current crisis?

This epic journey into the past shows that the world has already experienced and survived ice ages and warm periods - even without humans.