California is home to one fifth of the nation's threatened and endangered species. Many plants and animals here have been pushed to the brink of extinction by sprawling human habitats. They're also increasingly threatened by invasive species, foreign transplants that upset native ecosystems. KPCC's Ilsa Setziol traveled to the Channel Islands to report on how a species introduced to the islands 150 years ago has become a grave threat to one of California's most unique creatures. Edward R. Murrow Award, Best Writing, Radio Television News Directors Association (RTNDA), Golden Mike, Best Feature News Series, Radio Television News Association of Southern California (RTNA)
