On Global Warming, Let The Coolest Heads Prevail

International agreements are needed when one nation's industrial activity damages the environment in other countries. This is why President Bush has been severely criticized for being the only leader at the Rio summit to oppose a stringent accord on controlling global warming caused by the greenhouse effect. But the U.S. has taken the correct stand: The jury is still out on the effects on atmospheric temperature of carbon dioxide (CO2), chlorofluorocarbons, and emissions of other gases, mainly from the burning of fossil fuels.

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