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Fossil Record Supports Evidence Of Impending Mass Extinction

Posted October 24, 2007 9:51 AM

From ScienceDaily: Latest Science News:

Global temperatures predicted for the coming centuries may trigger a new 'mass extinction event' where over 50 percent of animal and plant species would be wiped out, warn scientists. Scientists have discovered a close association between Earth climate and extinctions in a study that has examined the relationship over the past 520 million years â€" almost the entire fossil record available. Matching data sets of marine and terrestrial diversity against temperature estimates, evidence shows that global biodiversity is relatively low during warm 'greenhouse' phases and extinctions relatively high, while the reverse is true in cooler 'icehouse' phases.

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Guru
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#1

Re: Fossil Record Supports Evidence Of Impending Mass Extinction

10/24/2007 10:00 AM

It makes sense. Given that biological systems depend on a narrow band of temperatures within which they can function, any disturbance that sends the ambient temperature outside the band is going to have an impact on an organism's survival chances.

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#2

Re: Fossil Record Supports Evidence Of Impending Mass Extinction

10/25/2007 8:53 AM

HMMMMM......., I guess that International Space Station would make a perfect Noah's Ark maybe huh... It sounds like the survial on mankind might just be off this planet. We can see a race for space starting up again. I wish man could see we are living on a big Island and that the universe needs to be explored soon. We need to get together to explore it soon because resorces my be getting low and things out there are getting farther and farther away. I see down the road if mankind can over come all there problems and work together on the goal of survival. They will be awesome.

It is just to bad I probably won't be around to see it.

John

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#3

Re: Fossil Record Supports Evidence Of Impending Mass Extinction

10/25/2007 12:38 PM

Back in my undergraduate biology classes i kind of remember something that might be called Survival 101: Adapt or Die, also called Survival of the Fittest. Seems the premise is still valid. Why hasn't anyone caught on yet that greenhouse gasses are caused by global warming, not vice-versa? Walk barefoot across your lawn onto the sidewalk at noon on a sunny day. The air above both contains essentially the same concentration of greenhouse gasses, and both receive essentially the same solar radiation. Why is the concrete so much hotter? Plants absorb the energy and store it as carbohydrate without adding to the heat load, concrete asorbs it and generates heat. Consider an acre of grassland. Now clear it and replace it with a building 208.71 feet on a side and 208.71 ft tall (a little less than 10 stories). In place of that acre of grass you now have 5 acres (4 acres of vertical surface and another acre of roof) of good radiator surface for heating. Check our cities that have grown up over the past century worldwide, and there is your global heater. The odd part is that with the crying over dwindling agricultural acreage for food production, nobody seems able to see those vertical surfaces as contributing to our food supply. I will reply to emails to oertg@aol.com

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Anonymous Poster
#4
In reply to #3

Re: Fossil Record Supports Evidence Of Impending Mass Extinction

10/25/2007 5:29 PM

Bad theory, but Good idea.

Fittest for the time.

I suppose melanin will be in short supply soon.

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