NASA discovered a planet twice as big as Earth with a gas that is 'only produced by life'

[DFW]

8. What a place to ponder

A planet making enough methane that it supports twenty billion cows the size of wooly mammoths. The cattle industry is probably in talks with Elon Musk as we speak about how to market all that fresh, cheap organic beef here on earth. With all the methane (speculating on that), no one will have to worry about fueling the trip home—as long as the local Navi don’t mind sharing their food source.