[Paul Pierett]

Always too quick to publish. Then we get stuck with it for a long time. Now a new idea. How long will it last? They need to slow down and put it together with the rest of the evidence. Same goes for all this global warming stuff.

[cranked]

A theory to replace a theory....anyone else seeing the irony here? =.=

[Cicero]

It was caused by a Chimpanzee named Albert Gore, who persuaded his fellow chimpanzees to put out their barbecue fires so as to cut back on their carbon emissions.

[DBrow]

Wasn’t there an Ice Age irridium anomaly as well?

My own theory is that Clovis Man used too much fire, raising CO2 levels...

[Eagles6]

Hmm...and here I thoght that they had settled on the Milankovitch cycles.

http://www.homepage.montana.edu/~geol445/hyperglac/time1/milankov.htm

[JRios1968]

Bush’s Fault!

[dfwgator]

I didn't think this stuff was around back then.

[Raycpa]

Bush’s ancestors?

[Mad Dawgg]

The theory that makes most sense is that Earth goes through really long cycles having to do with its movement around the Sun and the Sun's cycle of activity as well. This cause periods of warmer and colder temperatures cycles thousands of years long.

If you read up on the REAL science you will find that the above theory has lots of data to back it up! Unfortunately it doesn't give any ammo for the "Church of Climate Change" to enforce its Communist/Green agenda so it's not allowed to be given air time on the MSM.

[20yearvet]

The Ice Age was a result of Piltdown man. Just as Globle Warming is a result of to many speaches by Al Gore.

[UCANSEE2]

Why would it have to be a comet, instead of a meteor?

[siunevada]

“12,900-year-old sentiment layers”

Love it. Is that some sort of quaint local Canadian dialect?

[HardStarboard]

High probability that Magnetic Reversals cause ice ages. Read "Magnetic Reversals and Evolutionary Leaps" - The True Origin of the Species....Robert W. Felix.

His earlier book, "Not By Fire But By Ice" is a great read but out of print. You might get a copy by calling 425-821-7372 [Sugarhouse Publishing].

Felix has synthesized all the available science and drawn some conclusions no one else seems to have the insight to come up with. He first published in 1997 - simply a brilliant thinker! Website is at www.iceagenow.com

[HardStarboard]

High probability that Magnetic Reversals cause ice ages. Read "Magnetic Reversals and Evolutionary Leaps" - The True Origin of the Species....Robert W. Felix.

His earlier book, "Not By Fire But By Ice" is a great read but out of print. You might get a copy by calling 425-821-7372 [Sugarhouse Publishing].

Felix has synthesized all the available science and drawn some conclusions no one else seems to have the insight to come up with. He first published in 1997 - simply a brilliant thinker! Website is at www.iceagenow.com

[Born to Conserve]

When was that ever an accepted theory that a comet caused an ice age 13k years ago? The ice ages are cyclic, and you could have set you watch by the one 13k years ago.

http://en.wikipedia.org/wiki/File:Vostok_Petit_data.svg

[mdmathis6]

I think it was caused by a rapid and catastrophic rise of enviromental dihydrogenmonoxide over a period of 960 hours in such amounts that almost all life had no ability to store or metabolize it, thus were asphyxiated by it.

[norwaypinesavage]

"scientists now argue instead, that water from melting glaciers disturbed ocean currents and caused worldwide temperatures to drop, resulting in a mass extinction that almost wiped out the human race.'

So, Global Warming caused the last ice age! We're doomed!!

[DB]

13,000 years ago was the end of the last glacial period, not the beginning.

[aruanan]

The theory that a giant comet crashed into earth around 13,000 years ago, causing the planet to freeze over and animals to die off is now being called into question as another theory is being put forth to explain the cause of the ice age.

Gee, the last major glaciation was over a period of about 100,000 years pretty much preceding any such cometary event 13,000 years ago. If anything, one could argue that it could have prolonged the ice age or led to the current interglacial period.

[calex59]

To me this is just another attempt to say that global warming causes global cooling, an attempt to explain why temps are now dropping world wide(despite what the MSM is trumpeting)and a way to keep the grant money, and carbon credit money, flowing.