OK, boys and girls, we have two choices here:
1. Open Wikipedia and read the page on the Science of Studying the Climate, "PALEOCLIMATOLOGY",
http://en.wikipedia.org/wiki/PaleoclimatologyYou will learn there is a "Greenhouse Earth"
http://en.wikipedia.org/wiki/Greenhouse_and_icehouse_Earth but also an "Icehouse Earth" ...
2. Go to Washington, D.C., and visit the Museum of Natural History
www.mnh.si.edu and while you're at it,
see the most interesting conference on "Climate Change throughout the Past"
http://www.mnh.si.edu/calEvents/one-time-events.asp?trumbaEmbed=eventid%3D108...Now, all, please bear in mind we are talking about a Planet which is quite a few BILLION years old, and whose cycles are in the range of THOUSANDS of years to achieve anything worthwhile...
...to claim "the sky is falling!" because there have been 10 years of "whatever", followed by another few years of "whatever else",
is like a 13-y.o. teenage girl screaming she'll be ugly for life because she has ONE PIMPLE.
LAST.
As North Country is so good at copy&pasting from Wikipedia, may I please attempt a try myself.
Carbon dioxide (chemical formula CO2) is a naturally occurring chemical compound composed of 2 oxygen atoms each covalently double bonded to a single carbon atom.
It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state, as a trace gas at a concentration of 0.04 per cent (400 ppm) by volume, as of 2014.[1]
As part of the carbon cycle, plants, algae, and cyanobacteria use light energy to photosynthesize carbohydrate from carbon dioxide and water, with oxygen produced as a waste product.
The environmental effects of carbon dioxide are of significant interest. Atmospheric carbon dioxide is the primary source of carbon in life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian eon was regulated by photosynthetic organisms.
Plants require carbon dioxide to conduct photosynthesis. Greenhouses may (if of large size, must) enrich their atmospheres with additional CO2 to sustain and increase plant growth.[24][25] A photosynthesis-related drop (by a factor less than two) in carbon dioxide concentration in a greenhouse compartment would kill green plants, or, at least, completely stop their growth.
Carbon dioxide in Earth's atmosphere is considered a trace gas currently occurring at an average concentration of about 400 parts per million by volume[1] (or 591 parts per million by mass). The total mass of atmospheric carbon dioxide is 3.16×1015 kg (about 3,000 gigatonnes).[citation needed] Its concentration varies seasonally (see graph at right) and also considerably on a regional basis, especially near the ground. In urban areas concentrations are generally higher and indoors they can reach 10 times background levels. Carbon dioxide is a greenhouse gas.
Before the advent of human-caused release of carbon dioxide to the atmosphere, concentrations tended to increase with increasing global temperatures, acting as a positive feedback for changes induced by other processes such as orbital cycles.[39] There is a seasonal cycle in CO2 concentration associated primarily with the Northern Hemisphere growing season.[40]
Five hundred million years ago carbon dioxide was 20 times more prevalent than today, decreasing to 4–5 times during the Jurassic period and then slowly declining with a particularly swift reduction occurring 49 million years ago.[41][42] Human activities such as the combustion of fossil fuels and deforestation have caused the atmospheric concentration of carbon dioxide to increase by about 35% since the beginning of the age of industrialization.[43]
Up to 40% of the gas emitted by some volcanoes during subaerial eruptions is carbon dioxide.[44] It is estimated that volcanoes release about 130–230 million tonnes (145–255 million short tons) of CO2 into the atmosphere each year. Carbon dioxide is also produced by hot springs .Now, please read the yellow enhanced again.
Now, please tell me where SUVs, Al Gore and the Carbon Tax fit in this picture.
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