Methane is one of the more common molecules in the universe (certainly in our solar system). It could be from non-life sources...or it could be from life sources.
Sounds like a good reason to seen research teams to Mars to me.
“Sounds like a good reason to seen research teams to Mars to me.”
Nah, when Mars burps the alphabet in methane, then we can spend a trillion dollars to go check it out :P