5. Climate Change -- isn't it natural?

More urban myths about climate change are busted as I look at the Earth's climate over the last 500 million years. What causes it to change? Since carbon dioxide was much higher in the past, why do climatologists say higher CO2 now poses a problem? And of course there's the familiar myth that CO2 can't influence temperatures because the climate was much colder in the past when carbon dioxide levels were much higher.
REFERENCES
"CO2-forced climate thresholds during the Phanerozoic" -- D.L. Royer, Geochimica et Cosmochimica Acta, Dec 2006

"Celestial driver of Phanerozoic climate?" -- N. Shaviv and J. Veizer, GSA Today, 2003

"Bathymetric and isotopic evidence for a short-lived late Ordovician glaciation in a greenhouse period" -- Brenchley et al, Geology; April 1994

"Reconciling Late Ordovician (440 Ma) glaciation with very
high (14X) CO2 levels" -- CROWLEY T. J. ; BAUM S. K., Journal of Geophysical Research 1995

"An atmospheric pCO2 threshold for glaciation in the Late Ordovician"
-- M. T. Gibbs et. al, Geology; May 1997

"A weathering hypothesis for glaciation at high atmospheric
pCO2 during the Late Ordovician." -- L.R. Kump et al, Palaeoclimatology alaeogeography
Palaeoecology 1999

"Long-lived glaciation in the Late Ordovician? Isotopic and se-
quence-stratigraphic evidence from western Laurentia" -- M. R. Saltzman,S. A. Young, Geology; February 2005

Graph at 2:28 showing increasing solar output taken from James Imamura at the University of Oregon Dept of Physics, http://jersey.uoregon.edu/~imamura/12...

"Solar Activity Over the Last 1150 Years: Does it Correlate with Climate?" -- I. Usoskin et.al, Proceedings of The 13th Cool Stars Workshop, 2004 If you have a problem with any of the research that has been done into climate change, please do not waste your time discussing it on YouTube. Write a paper and have it published in a respected, peer-reviewed journal. And no use complaining to me if you think you have found flaws in the work of a particular researcher, write to them and let them know. They will be absolutely delighted to hear from you.

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  Education

[william leshitski]

what has more value? earth? streams? rivers? trees? animals?, or some rich dude that destroys everything for profits? the earth is getting hot, in a way it is a defense, to kill off everything on earth, so it can reset itself. all humans must either die or leave the planet, its the only way earth will survive. any scientist will agree, Humans are an invasive species.

[atgskater14]

CO3+O2 yields one million moles of happy gas, right?

[Yuoskalola]

YOU STUPID FUCKS WHO CARES WHY IT'S HAPPENING THIS IS FOR SURE THE AGE OF DELUSION

[naturfagstoff]

What gas do you suppose is formed when you heat carbonates?

[naturfagstoff]

Let a geologist and a chemist consider that a possibility. If CO2 levels really were that high in the air, would not the oceans have been much more acidic than today? What organisms would you suggest calcifies under such conditions? And as far as I remember, you said that the ocean floor was pushing up UNDER the continental plate. Would this not cause the carbonates to decompose by heating?.

[naturfagstoff]

Lets see... CO2 levels more that 18 times those of today, should give about 4,5 deg C higher global temperature, everything else being equal. But an ice-age, that is 6 deg C lower than now? Can you explain to me how many % decrease in solar infrared radiation would cause this to happen? Is it maybe 25? Do you think solar scientist would agree with you on this? And the other thing: Massive decrease in CO2 by subduction... Calcium carbonate buried under mountains on the bottom of the sea?

[Vic Longdong]

look at John Christy and Roy Spencer videos, you alarmist people think deniers are in the minority and we haven't got a leg to stand on, how wrong you are, its you alarmists that don't care and the ones being used into supporting a theory that's exhorting billions of tax payers dollars for illegitimate purposes

[Vic Longdong]

you say scientists, lets get it right and say climate scientists, don't lump these corrupt deceiving assholes with regular honest scientists, what you call evidence I call propaganda run by the UN and the evidence is just not there, only a lot if's, whens and probables, you will say what about the recent warming, its been warming for the last 200 years and that warming is continuing now

[secularnevrosis]

Seems you either don't care or simply can't find anything substantial to back up you position on this...So we leave it at that..it was your opinion..