'Sudden Death at Sea Mystery' Solved

Since the times of Aristotle, mass strandings of whales have puzzled people. Modern-day strandings can be investigated and their causes, often human-related, identified. Events that happened millions of years ago, however, are far harder to analyze-frequently leaving their cause a mystery. A team of Smithsonian and Chilean scientists examined a large fossil site of ancient marine mammal skeletons in the Atacama Desert of Northern Chile-the first definitive example of repeated ...