scientist aims to save threatened frogs , toads , salamanders . The scientists said amphibians are the world 's most threatened group of animals . One in 122 of 6,000 recognized amphibian species at risk of extinction , group says . three amphibian species have gone extinct since 1980 , group says . amphibians species could help in development of medicines , Amphibian Survival Alliance says .
scientist aims to save threatened frogs , toads , salamanders . One in 122 of 6,000 recognized amphibian species at risk of extinction , group says . three amphibian species have gone extinct since 1980 , group says . amphibians species could help in development of medicines , Amphibian Survival Alliance says .