There are many environmental problems associated with ruminant livestock and these problems continue to grow as the demand for meat-rich diets increases around the world. One of the biggest problems is that cows emit methane through eructation (or belching) as they chew their cud. Methane is a powerful greenhouse gas, some 25 times more potent at trapping heat than carbon dioxide. More than a quarter of all human-originated methane going into the atmosphere comes from raising livestock.
Natural gas, also known as methane, is one of several “greenhouse gases” that trap heat radiation trying to leave the Earth. Molecule-for-molecule, methane warms our planet’s atmosphere about 25X more than carbon dioxide.