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Carbon dioxide isn't the only greenhouse gas that worries climate scientists. Airborne levels of two other potent gases - one from ancient plants, the other from flat-panel screen technology - are on the rise, too. ...more
October 25, 2008
Global warming has probably made Hurricane Gustav a bit stronger and wetter, some top scientists said Sunday, but the specific connection between climate change and stronger hurricanes remains an issue of debate. ...more
September 1, 2008
Oxygen, key to life on Earth today, began to appear on the planet millions of years earlier than scientists had thought, new research indicates. ...more
September 30, 2007
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