What exactly would it take to wipe humanity off the face of the Earth?
Willpower. Dedication. Drive!
But seriously, I would think that a number of relatively small shifts in the earth's portfolio would wipe out humans (and possibly most animals/plants).
I know cockroaches are cool and all, as contenders for inheriting the earth after us, but the little moss pig, also called a water bear (tartigrades) can resist almost everything (not really, but check them out, they are super-tough animals!)
Willpower. Dedication. Drive!
But seriously, I would think that a number of relatively small shifts in the earth's portfolio would wipe out humans (and possibly most animals/plants).
I know cockroaches are cool and all, as contenders for inheriting the earth after us, but the little moss pig, also called a water bear (tartigrades) can resist almost everything (not really, but check them out, they are super-tough animals!)