Sources that show where the majority of the methane actually comes from...

[Guest guest]

This CNN article also suggests the majority comes from the mouth

 

http://archives.cnn.com/2000/NATURE/07/21/cow.methane.enn/index.html

(Thanks to Tim Radak for finding this!)

 

 

 

And for more reference, you can see Noam Mohr's footnotes here:

http://www.earthsave.org/news/earthsave_global_warming_report.pdf

 

Do a search first for " 85% " so you can see where it is in the report and

then look for the footnotes.