The links you provided were very interesting. Skeptics have long asserted that the Earth was much warmer in the past, obviously due to natural cycles. If the study regarding the species extinction some 250,000 millions years ago receives wide scientific acceptance, then the future of Earth may once again face such a problem. It happened before. Whatever caused CO2 levels to surpass the cited 1,000 ppm level could happen again. I would not worry about man made CO2, because we will run out of oil long before man made CO2 reaches that level (in about 200 years?). The idea that Mother Nature could inflict this upon us, whether we burn fossil fuels or not, could provide significant challenges to future generations for adaptation.

The idea that man made CO2 could take us to this point depends on the validity of this hypothesis. Even if were true, the world is supposed to run out of oil in the next 40-50 years. By then the hypothesis will be moot. That is, unless you would ascribe the Al Gore “tipping point” claim. Al Gore can’t wait that long. He’s got too much invested in the “rush to judgement” for the AGW hypothesis.

Regarding Al Gore, he’s a lucky guy. How many people do you know that will get filthy rich while saving the planet? Well, actually, there’s the top executives at General Electric and many other large corporations, plus who knows how many politicians…but who’s counting?

Enjoy your trip to Mars.

The dumbing down of America is well underway.

The problem is “global warming”. Most climate scientists prefer to call it “climate change”, which is definitely more accurate, but carries a far too mild implication. This is why I’ve changed to calling it “climate chaos” over on The Cost of Energy. I think it’s more accurate than “global warming”, and it conveys more of the uncertainty and seriousness of the situation. As long as we keep calling this unfolding mess by the cuddly name “global warming”, it will be that much easier for the ideologues and financially motivated to convince right-leaners to ignore science. And given the role of public policy in our future regarding energy and environmental issues, that’s a humongous issue.

If the Obama administration launches a climate-change awareness campaign, I think it needs to drive home two points above all others: (1.) We’re talking about SCIENCE, not a political disagreement, and (2) the science is about LONG-TERM, GLOBAL climate patterns, not a December cold snap in East Dogpatch.

Global Warming can lead to Hydrogen Sulfide gas coming out of
the oceans. Hydrogen Sulfide gas will Kill all people. Homo
Sap will go EXTINCT unless drastic action is taken NOW.

October 2006 Scientific American

“EARTH SCIENCE
Impact from the Deep
Strangling heat and gases emanating from the earth and sea, not asteroids, most likely caused several ancient mass extinctions. Could the same killer-greenhouse conditions build once again?
By Peter D. Ward
downloaded from:

http://www.sciam.com/ article.cfm?articleID=00037A5D-A938-150E-A93883414B7F0000&sc=I100322

………………..Most of the article omitted………………….
But with atmospheric carbon climbing at an annual rate of 2 ppm and expected to accelerate to 3 ppm, levels could approach 900 ppm by the end of the next century, and conditions that bring about the beginnings of ocean anoxia may be in place. How soon after that could there be a new greenhouse extinction? That is something our society should never find out.”

Press Release
Pennsylvania State University
FOR IMMEDIATE RELEASE
Monday, Nov. 3, 2003
downloaded from:
http://www.geosociety.org/ meetings/ 2003/ prPennStateKump.htm

“In the end-Permian, as the levels of atmospheric oxygen fell and the levels of hydrogen sulfide and carbon dioxide rose, the upper levels of the oceans could have become rich in hydrogen sulfide catastrophically. This would kill most of the oceanic plants and animals. The hydrogen sulfide dispersing in the atmosphere would kill most terrestrial life.”

http://www.astrobio.net is a NASA web zine. See:

http://www.astrobio.net/ news/ modules.php?op=modload&name=News&file=article&sid=672

http://www.astrobio.net/ news/ modules.php?op=modload&name=News&file=article&sid=1535

http://www.astrobio.net/news/article2509.html

http://astrobio.net/ news/ modules.php?op=modload&name=News&file=article&sid=2429&mode=thread&order=0&thold=0

These articles agree with the first 2. They all say 6 degrees C or 1000 parts per million CO2 is the extinction point.

The global warming is already 1.3 degree Farenheit. 11 degrees Farenheit is about 6 degrees Celsius. The book “Six Degrees” by Mark Lynas agrees. If the global warming is 6 degrees centigrade, we humans go extinct. See:
http://www.marklynas.org/ 2007/ 4/ 23/ six-steps-to-hell-summary-of-six-degrees-as-published-in-the-guardian

“Under a Green Sky” by Peter D. Ward, Ph.D., 2007. Paleontologist discusses mass extinctions of the past and the one we are doing to ourselves.

OIL SHALE, TAR SANDS AND COAL MUST BE LEFT IN THE GROUND TO AVOID THE EXTINCTION OF US HUMANS.
We have to convert to plug-in hybrid cars so that electricity made by low-CO2 methods powers most of our driving. Nuclear power produces the least CO2 of ANY source of electricity.
32 countries have nuclear power plants. Only 9 have the bomb. The top 4 producers of CO2 all have nuclear power plants, coal fired power plants and nuclear bombs. They are the USA, China, India and Russia. Reducing CO2 production by 90% by 2050 requires drastic action in the USA, China, India and Russia. Coal, oil shale and tar sands must be left untouched in the ground.

I have no connection to the nuclear power industry.

In another decade or two, it may be time for grateful Oklahomans to rename the State Formerly Known as Oklahoma as The Senator Inhofe Memorial Dustbowl.

The 1930s Dust Bowl was a local human-made disaster-awaiting-the-next-dryspell. The next one is a more global human-made disaster awaiting the next natural drought, but it looks to last centuries, rather than a decade.

OTOH, I do think that those, who put the turtle on the post, do want the Repugnants to be more like SP, because that is the America that they see bending to their will. Delay, denial, deception, prejudice, fear, they will use all of these and other amoral tactics to continue BAUAAAE (Business As Usual And Above All Else). Never mind upgrading science in our schools, let’s teach our children how to be highly paid wardrobe consultants.

BTW: @Wilmot: Experts disagreeing is a hallmark of a complex issue. I would caution again decrying this objection. The opposite is Groupthink into another Cuban missile crisis, another space shuttle go boom, etc.