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Texas Monster Web

A giant 40-foot spiderweb has engulfed an East Texas forest like shrink wrap, launching an investigation into what creature could have built it and why. See how a half a million flamingos disappeared from one of Africa's most famous soda lakes almost overnight. And find out what could have driven 26 dolphins to their deaths in a shallow Cornish creek ' one of the worst incidents of its kind in U.K. history.