2 upvotes, 2 direct replies (showing 2)
View submission: xkcd 1338: Land Mammals
We only exist because cyanobacteria poisoned the atmosphere with oxygen and wiped out most life on Earth.
Our dominance and potential destruction are perfectly natural, and part of a long cycle.
Comment by [deleted] at 06/03/2014 at 21:00 UTC
2 upvotes, 0 direct replies
Sometimes I wonder if some of them made movies and wrote signs to try to get the others to stop farting oxygen.
Comment by dopplerdog at 06/03/2014 at 03:07 UTC
1 upvotes, 0 direct replies
All fine. Just pointing out that evolution is descriptive and not normative.