Quote:
Originally Posted by tabs
And when did they start keeping these records? Would you say about 150 years ago or so? U must admit that is sufficient time to figure out what a 5 Billion year old planet is doing with regards to climate..
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blabs - you are smart enuff to know that 5 B years is not the time period of interest
we are concerned with what is happening now, and will happen to our kids, grandkids, and etc.
we are interested in history mainly since the industrial revolution, which is when large amts. of CO2 started to be spewed into the atmosphere.
it is of course interesting to look at plate tectonics, ocean circulation, changes in land use practices and the appearance of blue-green algae (cyanobacteria) - all of which have changed the biosphere and atmosphere, but none of that is particularly germane to current issues