In the years since the first reports about the disappearance of frogs worldwide, many researchers have warned the plight of amphibians may be an early sign of environmental problems that could affect humans. More recent reports of DEFORMED frogs have added to these concerns. Minnesota Public Radio's Mary Losure has the final report in our series on vanishing frogs. Around the world, frogs are disappearing for reasons scientists don't understand. Now, that mystery has a new twist---the DEFORMED frogs first reported in Minnesota in 1995, and later from many other states.