Channel IslandsSeparated from the California mainland throughout recent geological history, the Channel Islands provide the earliest evidence for human seafaring in the Americas. It is also the site of the discovery of the earliest paleontological evidence of humans in North America[4] The Northern Channel Islands are now known to have been settled by maritime Paleoindian peoples at least 13000 years ago. Archaeological sites on the island provide a unique and invaluable record of human interaction with Channel Island marine and terrestrial ecosystems from the late Pleistocene to historic times. Historically, the northern islands were occupied by the Island Chumash, while the southern islands were occupied by the Tongva. The Chumash and Tongva were removed from the islands in the early 1800s, taken to Spanish missions and pueblos on the adjacent mainland. For a century, the Channel Islands were used primarily for ranching and fishing activities, which had significant impacts on island ecosystems, including the local extinction of sea otters, bald eagles, and other species. With most of the Channel Islands now managed by federal agencies or conservation groups, the restoration of the island ecosystems has made significant progress. In 1972, the Brown Berets, a group of Chicano activists seized and claimed the islands for Mexico, citing the Guadalupe Hidalgo Treaty, a treaty between Mexico and the USA by which Mexico sold more than half of its territory, and arguing that ...