THE HURRICANE that struck Louisiana yesterday was nicknamed Katrina by the National Weather Service. Its real name is global warming. When the year began with a two-foot snowfall in Los Angeles, the cause was global warming. When 124-mile-an-hour winds shut down nuclear plants in Scandinavia and cut power to hundreds of thousands of people in Ireland and the United Kingdom, the driver was global warming. When a severe drought in the Midwest dropped water levels in the Missouri River to their lowest on record earlier this summer, the reason was global warming. In July, when the worst drought on record...