Contents contributed and discussions participated by Renata Alarcon
Air Pollution Facts, Air Pollution Effects, Air Pollution Solutions, Air Pollution Caus... - 0 views
Global Climate - 0 views
Future temperature changes - 0 views
Global Warming -- National Geographic - 0 views
Global Warming - 0 views
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Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth's atmosphere, which increases the temperature. This hurts many people, animals, and plants. Many cannot take the change, so they die.
Global Warming- Science - The New York Times - 0 views
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The average surface temperature of earth has increased more than 1 degree Fahrenheit since 1900 and the rate of warming has been nearly three times the century-long average since 1970. Almost all experts studying the recent climate history of the earth agree now that human activities, mainly the release of heat-trapping gases from smokestacks, tailpipes, and burning forests, are probably the dominant force driving the trend.
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