Maggie's Farm

The evidence for a mass extinction as a result ... not so much.

That was one of the arguments back in the day, possible because of the sparse fossil evidence across the KT boundary, but I believe that as the actual evidence increased the case for sudden mass extinction became much stronger.

As to the cooling, the first thing to survive would be living under a red hot sky. All the hot rock up in the sky would act something like a broiler. There is evidence of widespread forest fires all across North America at the time. As to a green house climate like the present day, the Cretaceous average temperature was about 10C warmer than today; we are living a glacial age. Frankly, I'm not sure there would have even been a gulf stream given the plate configuration at the time.

Reminds me a bit of a talk by Robert (warm blooded dinosaurs) Bakker back when the impact theory was still controversial. Bakker's argument was that a land bridge had formed, leading to migrations and the spread of diseases, resulting in mass extinctions. Good talk, I commented to my friends after, totally wrong of course, but a good argument even so. I don't think Gregory Price has made a good argument, however. Although one should never judge such things on the basis of a newspaper article.