Just to correct a few misconceptions here,
CO2 is heavier than air, it does not get to the upper atmosphere.
CO2 is at present 0.04% of the atmosphere, which is less than it has been for most of the last 10,000 years, At 180ppm, plants start to die off.
The claimed rise in temperature since 1900 is between 0.6 and 1.2 degrees depending on who you read.
More CO2 helps agriculture, it is pumped into commercial greenhouses at 1000ppm, and the plants use less water.
We have not had more hot days, and no one is willing to explain how global warming can produce cold days.
The planet is not hotter that it has ever been, this happened globally in the 1930's and it was much hotter during the medieval warm period (qv), and much colder during the little ice age (qv), which ended about 1860.
By any metric, in any area you choose, there is actually less extreme weather, and it is WEATHER, not climate.
The climate has always changed, there has been 40 deg of warming between now and the last ice age.
Nils-Axel Morner (qv) has just resigned from the IPCC where he was head of the sea level commitee, after submitting a report to the IPCC which they rejected. The report shows that sea level has been rising in a linear fashion all around Europe at the rate of about 1mm per year for at least the last fifty years, and that there is no rise at all in the pacific.
At the end of the last ice age, over a 10,00 year period, sea level rose over 400 feet.
We have been studying the polar ice caps since at least the mid 1800's and it is known that the amount of ice is cyclical with defined maximums and minimums The ice at both the poles has not gone beyond the minimum at any time. The ice at the north pole is floating sea ice, if it were all to melt, sea level would go down, as water expands when it freezes, and it therefore displaces more water than it actually contains. The numbers of polar bear have increased rapidly over the last 7 years, they do not live on the ice, they go onto the ice to hunt, and they have been very succesful, the more seal, the more polar bears.
Acidification of the seas? NOT POSSIBLE the sea floor consists of the alkaline remains of millions of years worth of sea creatures who turned CO2 into calcium and is deposited in layers thousands of feet thick. This acts as an acidification buffer, and it would have to be all dissolved before the alkalinity could change.
All this is factual simple physics, and taken from recorded data, and can be checked by anyone with a computer. Stop reading the headlines and start checking the facts. The global warming scam is beginning to unravel itself. In the tropical rain forests of the precambrian period, when there was the greatest explosion of life ever, and species became more numerous and diverse than ever before, the geological record tells us that atmospheric CO2 was at about 7000ppm. As far as plant life is concerned 400ppm is virtually starvation level. the planet has greened since the rise in CO2, even in semi desert areas. It could be seen as foolish for carbon based life forms, which is what all life on earth is, to mess around with the amount of available carbon.