"The surprising thing is that the Newsweek article in the 1970s was referring to global cooling, and then-Senator Obama was referring to global warming. Yes, that’s right. The panic in the ’70s was that the earth’s temperature was declining and would continue to decline. Today, the concern is the earth’s temperature is rising and that it will continue to rise." "Historical evidence provides a different perspective on global temperatures during the last two millennia. There is good evidence that the climate in the Northern Hemisphere was warmer about a thousand years ago—the Vikings were able to farm in Greenland. After a few hundred years, they stopped farming due to a cooler climate. The temperature continued to decline for a few hundred more years, and the Thames in London began to regularly freeze." "We do know that carbon dioxide is a greenhouse gas. Greenhouse gases act as a blanket over the earth. When sunlight heats the earth’s surface, the warm earth radiates some of that heat into the atmosphere. Greenhouse gases slow the escape of that radiated heat. You have been led to believe that the most important greenhouse gas is carbon dioxide. It is not. Water vapor and clouds are actually responsible for about 80 to 90 percent of the total greenhouse effect. That’s right, at least 80 percent. That is why clear mornings are usually much colder than cloudy mornings. On clear mornings, we do not have that blanket of clouds to hold in the heat. The percentage of the greenhouse effect attributable to CO2 is believed to be as high as 20 percent by some and as low as 4 percent by others.18 Almost everyone agrees that the percent of CO2 that is man-made is only about 4 percent of total CO2." answersingenesis.org/articles/nab4/climate-change
Posted on: Sat, 05 Oct 2013 13:14:46 +0000
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