| http://www.w3.org/ns/prov#value | - Before the fossil-fuel intensive Industrial Revolution took off, methane emissions were roughly 200 million tonnes annually; modern ruminants, including cows, goats, giraffes and other animals, emit between 50 million and 100 million tonnes of methane a year.University of Victoria climate scientist Andrew Weaver said: Frankly, methane emissions from dinosaur burps is probably not the number one t
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