About 32 per cent of global anthropogenic methane emissions result from microbial processes that occur during the enteric fermentation of ruminant livestock and manure management systems.
Another 8 per cent comes from rice paddies.
Methane is a short-lived greenhouse gas (GHG), which has an atmospheric lifetime of around a decade.
Another GHC Carbon dioxide, affects the climate for hundreds of years.
But methane is more than 25 times as potent as carbon dioxide at trapping heat in the atmosphere.