The Greenhouse Effect and Global Warming Recently, global warming has moved to a serious scientific issue. Because sunlight is constantly falling on the earth, the law of physics say that the planet has to radiate the same amount of energy back into space. Infrared radiation is sent out by the earth through the atmosphere, where molecules (carbon dioxide) hold outgoing radiation for a while, warming the surface.1 The molecules are kind of like glass in a greenhouse which is why this process of warming is called the greenhouse effect. The greenhouse effect has been operating since the beginning of time. Without the effect, the surface of the earth would be -20 degrees Celsius, oceans would have frozen, and there would be no life on earth. The Washington Post has reported that the earth is warmer than it has been in 1,200 y....

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