Conservationists who are already suing to block a geothermal power plant where an endangered toad lives in western Nevada are now seeking U.S. protection for a rare butterfly at another geothermal project the developer plans near the Oregon line.
Mention Yellowstone National Park and amphibians aren't likely to leap to mind. Yet the frogs, toads and salamanders that live in the 3,500-square miles of protected landscape are indicators of the park's health, as well as environmental changes.
