When sea rises, should a neighborhood be abandoned?
ALVISO, SAN JOSE, Calif. -- For one town at the southern tip of the San Francisco Bay, water has been the enemy for many years. Floods have struck repeatedly in Alviso, a San Jose neighborhood of about 2,000 people. Lying about 8 feet below sea level, it's been inundated when nearby rivers overflowed during rainstorms, with water rising so high it filled up homes and destroyed businesses. With climate change predicted to increase sea levels, some fear the water at some point could be unstoppable.