Shark Week! Florida Expert Wades Into Scary Brazil Waters

Off the coast of Brazil, sharks are attacking surfers and swimmers in record numbers. Forty-five shark attacks and 16 deaths in 13 years make the small beach off the port city of Recife one of the most dangerous in the world. Dan Huber, 27, a shark biologist at the University of South Florida, was part of an international team of scientists sent to Brazil to find out why...