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Mary Shane Col

Member Since: 02nd October 2010
No of Articles: 1
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07th December 2010

Let's Do Our Part: The Global Warming Phenomenon

Throughout its long history, Earth has warmed and cooled time and again. Climate has changed when the planet received more or less sunlight due to subtle shifts in its orbit, as the atmosphere changed, or when the Sun's energy varied. Global Warming is th...