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As Mammoths Died Out, Earth Chilled (mammoth burp and fart levels dropped, contributing to cooling)
news.discovery.com ^ | May 23, 2010 | Marlowe Hood

Posted on 05/24/2010 5:46:13 PM PDT by Free ThinkerNY

The rapid decline of mammoths and other megafauna after humans spread across the New World may explain a bone-chilling plunge in global temperatures some 12,800 years ago, researchers reported Sunday.

The 100-odd species of grass-eating giants that once crowded the North American landscape released huge quantities of methane -- from both ends of their digestive tracks.

As a heat-trapping greenhouse gas, methane is 30 times more potent than carbon dioxide (CO2).

It was not enough to trigger runaway global warming. But when all that gaseous output suddenly tapered off, it caused or at least contributed to a prolonged freeze known as the Younger Dryas cold event, they argue.

If so, the "Anthropocene epoch" -- the era of major human impacts on Earth's climate system -- began not with the industrial revolution in the 1800s, but the large-scale influx of two-legged predators to the Americas more than 13,000 years earlier.

Calculations by a trio of researchers led by Felisa Smith of the University of New Mexico, published in Nature, show how all the pieces of this previously unsolved puzzle might fit together.

Extrapolating from data on cows and other modern-day ruminants, the scientists estimated the total methane output of pre-historic megafauna at nearly 10 trillion grams per year.

(Excerpt) Read more at news.discovery.com ...


TOPICS: Science
KEYWORDS: catastrophism; godsgravesglyphs

1 posted on 05/24/2010 5:46:13 PM PDT by Free ThinkerNY
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To: steelyourfaith; SunkenCiv

Ping.


2 posted on 05/24/2010 5:47:54 PM PDT by rdl6989 (January 20, 2013- The end of an error.)
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To: Free ThinkerNY
mammoth burp and fart levels dropped, contributing to cooling

If this were true then Thanksgiving Dinner would be a sweat lodge in my family.

3 posted on 05/24/2010 5:51:33 PM PDT by Mikey_1962 (Obama: The Affirmative Action President)
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To: Free ThinkerNY

Whatever!

“it caused or at least contributed”

sound familiar?

“saved or created”

I am no scientist but I would imagine the planet would have had to have been “Nut to butt” and 25 deep of these animals to have “at least contributed”

It would have to be a mountain of mammoths that you could see from space.

This wacky sh14 just makes me bananas. Like WOW 10 trillion grams! OMG! you mean 10 billion kilograms? what is that in terms of total atmosphere? I am guessing in order to make an impact it would have to have some scientific notation attached to it.

Sorry just venting. Like I started with, Whatever!


4 posted on 05/24/2010 5:53:55 PM PDT by BookaT (My cat's breath smells like cat food!)
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To: Free ThinkerNY

Our science community has lost it’s collective mind...


5 posted on 05/24/2010 5:54:25 PM PDT by CarryaBigStick (My office is an Airtractor 402)
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To: Free ThinkerNY

http://en.wikipedia.org/wiki/Lake_Agassiz

The sudden draining of Lake Agassiz at the end of the last glaciation is much, much more likely.


6 posted on 05/24/2010 5:58:47 PM PDT by Snickering Hound
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To: Free ThinkerNY
Extrapolating from data....

There's the major source for junk science. But these climate 'scientists' just don't get it...or don't want to. So they just keep on doing it and develop 'models' that fit the extrapolation...*sigh*

7 posted on 05/24/2010 6:00:29 PM PDT by Moltke (panem et circenses)
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To: rdl6989; Free ThinkerNY

· join list or digest · view topics · view or post blog · bookmark · post a topic · subscribe ·

 
Gods
Graves
Glyphs
Thanks rdl6989 for the ping, Free ThinkerNY for the topic. Just adding to the catalog(s), not sending a general distribution.
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
 
To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
 

·Dogpile · Archaeologica · LiveScience · Archaeology · Biblical Archaeology Society ·
· Discover · Nat Geographic · Texas AM Anthro News · Yahoo Anthro & Archaeo · Google ·
· The Archaeology Channel · Excerpt, or Link only? · cgk's list of ping lists ·


8 posted on 05/24/2010 6:05:09 PM PDT by SunkenCiv ("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
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The Cycle of Cosmic Catastrophes: Flood, Fire, and Famine in the History of Civilization The Cycle of Cosmic Catastrophes:
Flood, Fire, and Famine
in the History of Civilization

by Richard Firestone,
Allen West, and
Simon Warwick-Smith


9 posted on 05/24/2010 6:05:53 PM PDT by SunkenCiv ("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
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10 posted on 05/24/2010 6:07:32 PM PDT by SunkenCiv ("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
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To: Free ThinkerNY

Mammoth farts - were they truly mammoth? The mind boggles. As the earth turns, the woolly mammoths break wind and burp up their lunch. And the earth cools. Or warms. Or whatever.


11 posted on 05/24/2010 6:08:24 PM PDT by 2 Kool 2 Be 4-Gotten
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To: Free ThinkerNY

What utter crap. The dead plants make methane whether they are digested in a stomach or rot on the ground. Just because the plant passes through a stomach before going into the soil changes nothing.


12 posted on 05/24/2010 6:10:05 PM PDT by Cruising Speed
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To: Free ThinkerNY

I love America! What a country. Where else on God’s Green Earth could a certified moron get a PhD? Only in America.


13 posted on 05/24/2010 6:16:38 PM PDT by centurion316
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To: Free ThinkerNY

Libs are utterly clinical.


14 posted on 05/24/2010 6:18:03 PM PDT by mike-zed
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To: rdl6989; Dr. Bogus Pachysandra; Nipfan; Amagi; Fiddlstix; Tunehead54; Clive; FrPR; tubebender; ...
Thanx !

 




Beam me to Planet Gore !

15 posted on 05/24/2010 6:19:31 PM PDT by steelyourfaith (America should take a mulligan on the 2008 presidential election.)
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To: Free ThinkerNY

So ten trillion grams would equal ten billion kilograms. By contrast, the total human emission of carbon dioxide (including emissions caused by changes in land use) is about 29 billion kilograms. But wait—methane is 30 times more potent than carbon dioxide. Thus those ten billion kilograms would have been the equivalent of releasing 300 billion kilograms of carbon dioxide. And yet, the earth didn’t heat up by ten degrees back then.

Just noticing.


16 posted on 05/24/2010 7:15:09 PM PDT by Our man in washington
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To: Free ThinkerNY

More likely, as the earth chilled mammoths died out. That is the simplest and most reasonable theory. It seems now that all science is political, what garbage.


17 posted on 05/24/2010 7:17:32 PM PDT by HerrBlucher (END THE WAR ON LIBERTY!)
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To: Free ThinkerNY

A number of sites have been found where a herd of mammoth were driven over cliffs, and then flensed and eaten by humans. The paleo-archaeologists speculate that the herds were driven by hunters using torches to crowd and panic the herd.

This form of hunting, a bit like using dynamite for fishing, is a more likely cause for their decline and extinction.


18 posted on 05/24/2010 10:45:57 PM PDT by Psalm 144 (Let me be clear. The voluntary pancipation of Cinco de Quatro is mandated in all 57 states.)
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To: Psalm 144

uhh. Missed the absurd point of the article. Time to sleep.


19 posted on 05/24/2010 10:46:55 PM PDT by Psalm 144 (Let me be clear. The voluntary pancipation of Cinco de Quatro is mandated in all 57 states.)
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To: CarryaBigStick

What do you think which was worse? Science today or when the church was the only science?


20 posted on 05/24/2010 10:52:27 PM PDT by Steve Van Doorn (*in my best Eric cartman voice* 'I love you guys')
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To: Psalm 144

Nope. See post #9.

Great book. Even explains why humans were wiped out in North America at the same time.


21 posted on 05/24/2010 11:58:45 PM PDT by SatinDoll (NO Foreign Nationals as our President!!)
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To: Free ThinkerNY

cause and effect, class, cause and effect


22 posted on 05/25/2010 4:46:08 AM PDT by NonValueAdded ("The real death threat is their legislation" Rush Limbaugh, 3/25/10)
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To: SatinDoll

Thanks for highlighting that for me, as I had skipped over it. I will check that out.

The periodic ‘dark ages’ that overtake human history have always fascinated me. I feel I have a front row seat on one of those right now . . .


23 posted on 05/25/2010 7:21:48 AM PDT by Psalm 144 (Let me be clear. The voluntary pancipation of Cinco de Quatro is mandated in all 57 states.)
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