Keep that towel handy. California parks officials can enforce a ban on nudity at any state beach, even in areas that have been informally designated as "clothing optional," a state appeals court says. The new policy will take effect immediately, although officers will decide whether to warn, cite or arrest violators, said Roy Stearns, spokesman for the state Parks and Recreation Department. "I'm pretty sure that we will try to tread lightly to get compliance at first," he said Monday, three days after the appellate court in Santa Ana published its ruling as a statewide precedent. "We're not in the...