Experts say computer models point to global warming
Northern California, withering under last week's punishing heat, wasn't the only hot spot in the world this year -- thermometers have spiked throughout much of the United States, Canada and Europe, and scientists are predicting more intense, longer and more frequent heat waves in the future.
While leading climate scientists have been reluctant to link regional heat waves with rising temperatures in the world's atmosphere and oceans, they say the recent weather patterns are consistent with computer projections for global warming.
In the United States, the first six months of 2006 were the hottest recorded in more than a century, according to the National Oceanic and Atmospheric Administration's National Climatic Data Center. Canada reported the hottest winter and spring since it started keeping track about a half-century ago, while England, Germany and France are sweltering, and the Netherlands is recording the hottest month since temperatures were first measured 300 years ago.
Should the government plan for the effects of gobal warming?