"Earth provides enough to satisfy every man's need, but not every man's greed." Mahatma Gandhi
1955 is when we found out there are two kinds of CO2, one that is constant and naturally occurring, moving from plant to sky to sea and round again. it has been hammered by sun light for eons. The other is from underground coal, oil and gas, from millions of years hidden from the sun and it contains a different isotope than the other, it carries a marker, a fingerprint known as C14. This is pollution, this is what is rising in our atmosphere, not the naturally occurring form but this one, one that was stored out of harms way by nature. This is the cause of global warming, it can be identified and counted, this is why we know we are the cause of a change in the worlds ecosystems due to new weather patterns that will almost certainly bring a lower standard of comfort to humans and decimate much of nature as we know it. In it's place will come poison ivy and mosquitos.