A very interesting fact: Methane is known to be 30-70 times more potent than carbon dioxide as a harmful greenhouse gas. When methane is burned in the presence of oxygen, it separates into carbon dioxide (CO2) and water (H2O). Even though CO2 is a greenhouse gas, it actually has much less impact on the atmosphere than directly released methane. You can even earn carbon credits from burning methane. As the climate change debate unfolds, farms with animals that produce large amounts of manure, and thus, large amounts of methane, are being targeted as "environmental polluters". However, no attention is brought to the large number of animals in cities, which generate tons of methane each year.