Cave discovery in Laos could unlock more about human evolution's biggest mystery

A tooth unearthed from a remote cave in Laos is helping to sketch an unknown chapter in the human story. Researchers believe the tooth belonged to a young female who lived at least 130,000 years ago and was likely a Denisovan -- an enigmatic group of early humans first identified in 2010. The lower molar is the first fossil evidence placing Denisovans in Southeast Asia and may help untangle a