Warning: Global warming is a fact, and the results are already visible. Hurricanes are getting stronger; droughts and floods are more frequent. In South Florida, waters rose roughly six inches between 1930 and 1981. That might not sound like much, but it's just the tip of a rapidly melting iceberg. "We are the most vulnerable metropolitan area in the world when it comes to sea-level rise," University of Miami professor Harold Wanless says. And, the avuncular geologist... More >>>