Originally Posted by azdroptop

CO2 may be rising, but where's the proof that more CO2 causes higher global temps? Humans expel CO2, should we all go kill ourselves? My point is there is no difinitive proof that humans have or even can cause a rise in temperatures. The earth has warmed and cooled before humans were around and will continue to do so. If man made warming is such a sure thing why are there thousands of prominent scientists who think it's BS? Why are there numerouse articles coming out now about how the earth is naturally cooling itself? Why in the 70's were scientists saying we were going to have an ice age? There are too many questions about it to cause harm to the economy of the world, not just the US. Remember the "hole" in the ozone layer from a few years ago? Why don't we hear about that anymore? Because it was bogus and scientists are now saying florocarbons were not responsible. The "hole" grows and shrinks naturally.