Researchers excavating at a site in northern Tanzania’s Olduvai Gorge have unearthed bone implements made by human ancestors 1.5 million years ago. This is around a million years earlier than scholars ...
Qiao and his son Qian Youjie work on a large piece of "chicken-blood" stone.[Photo provided to China Daily] Chicken-blood stone is one of the most prized ornamental materials in China and has been ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback