Some half a million years ago, Peking man lived in Zhoukoudian, in the southwestern suburbs of Beijing. The climate of that time was warmer and more humid than it is today. Forests and lakes in ...

In a river of Beijing, China, a “slender” creature with “fleshy” lips swam through the plants. Or at least, it tried to, but something pulled it toward the surface. Scientists looked at their catch — ...