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Global Warming or Global Freezing?

Global Warming or Global Freezing? President Obama at this moment made a melodramatic appeal at the United Nations as global measures to dramatically control how he called "the characteristic weather threat," current polite term since that is more... Read >

Greenhouse

What Causes the Greenhouse Effect? Life on earth depends on energy from the sun. About 30 percent of the sunlight that beams toward Earth is deflected by the outer atmosphere and scattered back into space. The rest reaches the planet's surface and is r... Read >