Reuters: Demolition crews on Friday began work on the biggest dam removal in California, a project aimed at protecting homes threatened by the aging, obsolete structure and restoring spawning grounds for native trout. Plans call for the 94-year-old San Clemente Dam, built on the Carmel River about 120 miles south of San Francisco, to be torn down in stages over three years, followed by rerouting of the river around the dam site and wildlife restoration. "In 10 years, when you come to the site, you won't...