Climate change through the rest of the 21st century could be much more threatening to coastal California than previously anticipated, based on newly published research led by the U.S. Geological Survey. The new numbers are dramatic: Dynamic flooding in California could total more than $150 billion in property damage and impact about 600,000 people by the year 2100, according to research. When factoring in population trends, extreme scenarios could increase the total number of affected Californians to more than 3 million.