The newest global warming forecast is in, and again, it isn't good. Researchers at Harvard compared weather data to the 6.5 million deaths in major U.S. cities between 1989 and 2000. During extremely hot periods deaths went up almost 6 percent. Deaths went up with extreme cold too, but only a third as much. The researchers predict that as summer temperatures increase, so will the number of temperature-related deaths. Their solution? Make air-conditioning universally available. Which, they admit, is not exactly a winning solution as far as the climate is concerned.