How did the pliosaurus, a 45-foot-long underwater prehistoric predator, keep up with its prey? A biomechanics expert finds answers by observing an unlikely present-day equivalent: the penguin.

Prehistoric Plant Eating in Morocco: Did These Hunter-gatherers Have a Choice? Isotopic analysis shows heavy plant consumption at Taforalt, Morocco, from 15,000 to 13,000 years ago – a time of ...