From riverbanks to shallow lakes, Spinosaurus combined display, biomechanics and hunting power in one of evolution’s strangest designs.

The molecular clock theory posits that genetic changes happen steadily and gradually, offering a reliable means for peering into the past and theorizing when complex life first emerged. However, there ...

Jawbones and other remains, similar to specimens found in Europe, were dated to 773,000 years and help close a gap in Africa’s fossil record of human origins. By Franz Lidz Researchers on Wednesday ...