Endangered Species Act's 50th anniversary: What 6 northwest animals can tell us
A female Spotted Owl sits perched on a branch of a tree among old growth near Mount Rainier forest land in Washington, June 27, 2008. - Chris Joseph Taylor/TNS/TNS

No matter how humble or obscure, all plant, animal and insect life in America is eligible for protection under the Endangered Species Act, one of the most far-reaching and important conservation statutes in the world. Arachnids, birds, corals, crustaceans, flatworms and roundworms, mammals, reptiles, sponges, trees, algae ... all species, great and small. The ESA turns 50 this month, and if beating extinction is the measure, the law has been a success. Of the more than 1,600 U.S. species listed for protection since the act's inception, 99% have been rescued from the oblivion of extinction. And...