Dear Editor,
Global warming is one of the toughest environmental challenges today, and it threatens the health of people, wildlife, and economics around the world. According to the United States Environmental Protection Agency, the problem is mainly carbon dioxide and other fossil fuels. These fuels, like water vapor, methane, nitrous oxide, and ozone, are then collected like a blanket in the atmosphere. Energy from the sun is supposed to drive earth's weather and climate and heat the earth's surface, and in turn the earth radiates energy back into space. When the atmospheric greenhouse gases trap some of the outgoing energy, the heat is retained somewhat like the glass panels of a greenhouse. As a result, the planet becomes warmer. In fact, 2002 was the second warmest year on record, right behind 1998, and just ahead of 2001 (EPA). Although earth temperatures fluctuate naturally, warming over the past fifty years is the fastest in history and experts believe that the......
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Approximate Word Count: 1470
Approximate Pages: 6 (260 words per double-spaced page) |