And by the way, “mammoth farts” means farts from mammoths, and not just enormous farts from anyone else, like bad-mannered neanderthals. From the You Couldn’t Make It Up Department:
SCIENTISTS believe gassy mammoths helped to fill the atmosphere with methane and keep the Earth warm more than 13 thousand years ago.
Experts estimate that, together with other large plant-eating mammals that are now extinct, they released about 9.6 million tonnes of the gas each year.
When the megafauna disappeared there was a dramatic fall in atmospheric methane which may have altered the climate, British scientists say.
Analysis of gases trapped in ice cores suggests that the loss of animal emissions accounted for a large amount of the decline.
Read it here.