[UCANSEE2]

My personal theory: the meteor event had an effect on the Earth's oxygen levels, lowering them for some long while.

I agree.

A meteor/comet that large would punch a large hole in the ozone, and allow the atmosphere to escape into space. This would dilute the content, besides the other chemicals and gases that the meteor/comet and the explosion would ADD to it.

Death would probably come slow, with the creatures becoming erratic (losing their minds) from the lack of proper breathing atmosphere. Of course, this would all be dependent on their distance from the impact site.

[Paladin2]

Your analysis of fluid dynamics is too simple. I believe that the Flintstones Show proves that Man and Dinosaurs co-existed.

[Bernard Marx]

You are either trying to pull our collective legs (most likely) or you attended the Academy of Creative Scientific Factology.

As for the hyperbolic headline, it was written by some hack in a cubbyhole, not a scientist. I can find nothing in the article itself that says what the headline claims.

[editor-surveyor]

>> “A meteor/comet that large would punch a large hole in the ozone, and allow the atmosphere to escape into space.” <<

.
A meteor would cancel the gravitational field of the Earth?

That doesn’t even rise to the level of good SciFi.

[Verginius Rufus]

OK, so if an asteroid hit the earth and caused the dinosaurs to go away, what happens if another asteroid hits the earth and the dinosaurs come back? Does the government have a contingency plan for that, other than to blame everything on George W. Bush? Without a doubt, women and minorities will be hurt the most. It won't be safe for kids to play outside if hadrosaurs and apatosaurs might come stomping by at any minute.

A long time ago, before Free Republic existed, I used to read an online Dinosaur list. My recollection is that not everyone buys into the big-asteroid-caused-dinosaur-extinction theory, but the advocates of that theory have been pretty successful at making the public think their theory is established science. Sort of like with man-made global warming.