A human finger fossil found in the Saudi Arabian desert dates back to almost 90,000 years ago, about 30,000 years earlier than humans were thought to have migrated east of Africa.
Humans were previously thought to have migrated into Eurasia in a large wave around 60,000 years ago, but discoveries like this have changed this view.
Professor Michael Petraglia of the Max Planck Institute says this discovery is a dream come true.