The past two decades have been devastating to amphibians the world over. One-third of the 6,000 frog species on Earth now are threatened with extinction. Sadly 92 percent of Haiti's 50 frog species are threatened -- the highest percentage of any country in the world. What is ailing them? Their habitat is disappearing around them.
Professor of biology at Penn State University Blair Hedges recently relocated ten critically endangered species of frogs from Haiti to a captive-breeding program at the Philadelphia Zoo. The mission