A puzzling mix of artifacts raises questions about Homo sapiens' travels to China

New analysis suggests Shiyu holds the oldest evidence of H. sapiens in northeast Asia

Five stone and one bone artifact on a black background represent a collection of artifacts researchers are using to try to trace the history of Homo sapiens in Asia.

An unusual array of artifacts dating to around 45,000 years ago in northeastern China reflects cultural mixing of Homo sapiens newcomers with unidentified local groups, researchers say.