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10-13-2007, 04:44 AM #1Senior Member
Nobel Peace Prize
My Biology Professor told us the other day that most of the ozone damage comes from methane emmited by CATTLE. instead of stop driving cars how about we just stop eating beef?ostexcuseme:
maybe in Somalia, but in general that is a ridiculous.
Couple issues we need to deal with here. The first is your imperfect grasp of the threats to the earth's atmosphere. While it's true that gas of, biological origin may be a problem, the concern isn't the ozone layer (which is being damaged by chlorofluorocarbons, or CFCs) but rather the greenhouse effect, which causes global warming.
Some newspaper reporters aren't quite getting it either in the Washington Post headlined "Feed, Animal Flatulence and Atmosphere." It described the work of one Donald Johnson, an animal-nutrition specialist at Colorado State University, who supposedly has been studying cow flatulence. According to the story, animal flatulence "contributes in a large way to the potentially catastrophic warming of the globe, the 'greenhouse effect.'" Each cow emits 200 to 400 quarts of methane gas per day, or 50 million metric tons per year.
Just one little problem. Cows don't emit 400 quarts of flatulence a day. According to Professor Johnson, they emit 400 quarts' worth of burps, known in polite circles as eructation. The Post, in other words, doesn't know one end of a cow from the other
Details aside, animal methane does present a definite threat to the biota. It's believed 18 percent of the greenhouse effect is caused by methane, putting it second on the list of offending gases behind carbon dioxide. Methane breaks down in the atmosphere to form carbon dioxide, ozone, and water, all of which absorb heat. The temperature of the atmosphere rises.
There are several major sources of methane: rice paddies (methane-producing bacteria thrive in the underwater environment), swamps and wetlands, mining and oil drilling, landfills, termites (although there's still some controversy on this one), "biomass burning" (notably in the Amazon rain forest), and animals. Ninety percent of animal methane is produced by ruminants (i.e., cud-chewers). These include sheep, goats, camels, water buffalo, and so on, but most of all cattle, of which the world has an estimated 1.2 billion.
Ruminants eat hay and grass and stuff containing cellulose, which can be digested only by special microbes that live in the ruminants' guts. Unfortunately, about 6 or 7 percent of what they eat winds up as methane.
So it is simply untrue that cattle does more to harm the ozone which as stated anyways that is not the problem now the greenhouse effect is. The hole in the ozone scare was a 80's 90's thing, the green house effect is the new one.sd6515 Reviewed by sd6515 on . Nobel Peace Prize So today Al Gore won the 2007 nobel peace prize: "for their efforts to build up and disseminate greater knowledge about man-made climate change, and to lay the foundations for the measures that are needed to counteract such change" Now why cant we focus on this stuff instead of war and prohibition? Rating: 5
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