A recent article mentioned belching Cows as Producing huge amounts of Methane. A quick Giggle Search mentions that there are 2 billion Cows on the planet - Belching night and day. They have two stomachs and grass is hard to digest. Then there is the Manure problem with 2 billion Cows.
Then we have 8 billion humans Shitting night and day - It's a Wonder there is any clean place to walk on Earth without getting Stuff on your Feet.
The Environmental Scientists haven't looked at Cow Farts and Human Farts yet. "Most scientists can't stand the Smell”, one environmental Scientist said.
“The Meter to Quantify Farts hasn't even been invented yet. They are still arguing over a name for such a device - Fartmeter or Fartometer - (Fartometer seems to be winning). "
Human Farts go way back.
Mozart is well known for writing to his father from Vienna. - "I had great Farts last night and hope your Farts today are as good as mine. This morning I also had a really big 'Dump’. almost as big as some of yours Father. "
The Germans at that time were famous for their Shitty talking.
It is possible Global Warming actually started way back in the 1700's with all of Europe massively Farting after eating Bratwurst and drinking lots of Beer.