RealPlayer Windows Media Listen to artist Jill Enfield describe the process of hand tinting photographs. The Fragile World of Frogs Frogs have been thriving in their watery worlds for nearly 200 million years, but now many species of the highly adaptable amphibians are in rapid decline.
Habitat loss is one reason, but scientists believe there's more.
Climate change, pollution, and disease are all working together to deform and kill frogs, creatures that strike the alarm when the environment is in trouble. Photographer George Grall takes an intimate look at the world of frogs, documenting the unusual births and fast reflexes exhibited by some species. George Grall's got a thing for critters. On Assignment George Grall and author Virginia Morell share their experiences in the field. In See more images by George Grall.