Prison Experiment, Butch Cassidy Manuscript, Dueling Mammoths

On display at the University of Akron's Center for the History of Psychology is a simple khaki uniform. It played a pivotal role in one of the most controversial science experiments ever conducted. But did a costume really bring out the worst in a group of volunteers?

The story of Butch Cassidy and the Sundance Kid - and how they died in a South American shootout -- is one of the most enduring tales of the Wild West. But is it true? The answer may lie in a 200-page manuscript at the American Heritage Center in Wyoming.

The tangled remains of two Ice Age mammoths are found locked together in a death grip. But why would these otherwise peaceful creatures, now on display at the Trailside Museum in Nebraska, engage in a fatal battle?

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