http://www.physorg.com/news99134637.html

Very interesting topic.

Suggest the following sentence would be more effective by adding the word "also" as follows:
Some of those ingredients were also found worldwide in soils dating to the K-T Boundary of 65 million years ago.

as reported in observer.guardian.co.uk/world/story/0,,2083758,00.html
the comet fragments were subjected to such heat and pressure as to become compressed into a diamond dust; the heat at ground-level would have been sufficient to ignite the grass and the clothes on your back, like ten thousand Hiroshimas in virtually the blink of an eye, followed by a thousand years of nuclear winter (without the fallout, of course).

Truly horrific, it would have come without warning or reason, one day it is a sunny day of fishing on the lake, the next moment, Dante's Inferno as far as you could run. Indeed, it begs a new respect for the peoples who witnessed, endured and survived this.

The evidence is mounting that events like these a guaranteed at some point to threaten civilisation. We are not spending nearly enough on what is the greatest threat to mankind.
NASA releases a poor 27 page document with no plans to deflect or destroy an asteroid.

http://space.newscientist.com/article/dn11...ritics-say.html

Remember Tunguska 1908? I could happening your lifetime!

In light of the fact that archeological discoveries indicate the Clovis cultures culminated with the influx of Amer-Inds, it sounds to me as if someone is attempting to come up with an hypothesis that exonerates Amer-Inds from any possibility of using means of "force" to displace indigenous peoples and cultures the red-skinned newcomers did not like. I guess the end-result of silly comet theories is to come up with an excuse why the Americas should be the sole domain of red-skinned peoples, in exclusion to others of another race who were in the Americas before Amer-Inds.

Yeah Paul, I was at the Amer-Ind missile complex the other day....very impressive.

or maybe time just repeats itself until you get it right....

Anyone have an explanation for the 1900-year hiatus before the Firestone meteorite produced the Younger Dryas cooling period?

In my view, strongly biased by over 30,000 hours of research on this particular subject, the YD was a product of the impact that carved 'my' crater, a forty-mile-wide, relatively shallow ricochet scar under lower Lake Michigan, 11,000 years ago.

JMARPL,

Are there actually underwater surveys which would support your belief that "your crater" was formed in Lake Michigan by a grazing meteor impact?