I agree with you. But you don't have to go quite all the way to Venus for a plausible scenario that would, probably, wipe out humanity. See page 6 of this link

I agree with you. But you don't have to go quite all the way to Venus for a plausible scenario that would, probably, wipe out humanity. See page 6 of this link for a scary infographic. http://burro.case.edu/Academics/USNA229/impactfromthedeep.pdf http://burro.case.edu/Academics/USNA229/impactfromthedeep.pd... Of course direct emissions won't get there alone, but runaway feedbacks could.