daftandbarmy said:
Man-made carbon dioxide emissions throughout human history constitute less than 0.00022 percent of the total naturally emitted from the mantle of the earth during geological history.
I am not going to get into a debate on GW, but, from a scientific point of view, the statement above is scary, and not the way one might think. In fact, it is scary because it supports that which it claims to refute.
Earth's geological time starts somewhere around 4.6 billion years ago. During the first billion year, as the earth cools down and is raked by mega volcanoes, it produces 99,9999% of its carbon dioxide in the atmosphere, pretty well all it will ever produce. Then about 2.7 billion years ago, we find the first evidence of bacteria's capable of photosynthesis producing oxygen - which requires a sufficiently high enough concentration to be noted in rocks of the era.
For men to then appear and in its whole history of only about 10,000 years, an insignificant amount of "geological" time - not even equivalent to a second in a day, to produce as much as 0.00022% of the CO2 is (to quote the Donald) "huge, a huge amount" in the shortest of time.
Thus, that sentence read in its proper scientific meaning does not debunk GW, but tends to support it.
C.Q.F.D.