[cogitator]

I didn't know that the "dinosaurs were killed by a meteor" theory had graduated to fact.

That statement had good wording, because some of the absolute most recent K/T boundary research is downplaying the likelihood that the Chicxulub crater caused the extinction of the dinosaurs, and the climate change + increased volcanism theory is regaining lost ground.

[kerryusama04]

check out my post #24.

[Mike Darancette]

the climate change + increased volcanism theory is regaining lost ground.

Just a pair of cosmic coincidences that two gigantic colliders impacted the earth at two times of massive volcanic upheavals and two mass extinctions?

Maybe the collisions set off the volcanism which caused the climate change.

[Al Simmons]

"and the climate change + increased volcanism theory is regaining lost ground."

You forgot to add "against all logic".

A global extinction of all critters bigger than a dog (except for the cold-blooded reptiles which could 'hibernate' through the global winter without having to eat for a year or more if necessary)is not going to be caused by "climate change" or "increased volcanism".

Actually, it was indeed caused by the temporary "catastrophic climate change" caused by the impact of the Yucatan asteroid (According to an Indian scientist, there may have been another simultaneous impact in Asia, presumably from the original object breaking up before impact, but that has not yet been proven as fact...)