That passing gas emits Methane, which is a more powerful "greenhouse gas", and includes Carbon as well. Combined with the emissions (noted above) of alive breathing humans, there is going to be a bunch of "hot air" emitted.
One can presume that this is "balanced" by some greenery that will be planted around "Spaceship Steve".
So much "flustering". Must be Al Gore on the board of directors (in his do as I say, not as I do mode).