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impacts are cool!

Chris Campbell wrote:
>> Matter a'fact, it occurs to me that some sort of "reverse El Nino," a
>> massive cooling of tropical waters,  could have precisely those sorts of
>> effects.
>And, interestingly, this is entirely consistent with the regression
>theory and entirely inconsistent with the impact theory (which would
>presumably result in boiled/superheated waters)...

No, no, no!  An impact would have raised vast amounts of dust into the 
atmosphere, blocking out sunlight and thus cooling the world.  C.f. Krakatau, 
nuclear winter, etc.  I will concede that it's consistent with regression too, 
in that regression could be caused by polar ice cap growth.