"Methane is responsible for nearly as much global warming as all other non-CO2 greenhouse gases put together. Methane is 21 times more powerful a greenhouse gas than CO2. While atmospheric concentrations of CO2 have risen by about 31% since pre-industrial times, methane concentrations have more than doubled. Whereas human sources of CO2 amount to just 3% of natural emissions, human sources produce one and a half times as much methane as all natural sources."(earthsave.org).
We need to focus on Methane a lot more than C0z i mean its causing nearly half the planets human caused warming. Methane is produced in many ways but he number producer is in animal agriculture. Many cattle's release methane whenever they fart. The only animal that doesn't is the Kangaroo, now scientists are trying to get that special bacteria from kangaroos and injecting them to animals so that their methane free!!. ""By replicating this bacteria not only would they [sheep and cattle] not produce such methane, they would actually get something like 10 to 15 per cent more energy out of the feed they are eating," said Dr Athol Klieve, a senior research scientist with the Queensland Government."(Kangaroo Bacteria)
Resources:
http://earthsave.org/globalwarming.htm
http://www.telegraph.co.uk/earth/main.jhtml?xml=/earth/2007/12/06/eakanga106.xml
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