Re: Possible sources (Score: 1)
by eviljim@pipedot.org in Mysterious Mars Methane: Curiosity Sees No Sign on 2014-09-23 02:28 (#2SSZ)
I heard that most of the methane is generated in their gut and is expelled as burps rather than farts, a roof and partial walls with a gap at the bottom would probably do to collect most of the methane since it's lighter than air, then concentrate and compress into storage tanks.