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**talisman** · 05-11-2007, 07:01 PM

skimmed a bit of that essay... it makes a lot of unsourced statements and leaves a lot of unspoken premises unsubstantiated. For example, in the paragraph on the composition of the atmosphere, the argument is made that because carbon dioxide makes up such a small portion of the gases in the atmosphere, it could not contribute to global warming, thus the argument that it does is incorrect. The unspoken premise here is that somehow the percentage must be very high for it to have an effect, yet no evidence is cited in support of this. (in fact, if you want to see what happens when methane and CO2 do compose the majority of an atmosphere take a look at Venus where average surface temperatures have been estimated I think somewhere around 800 degrees).

05-11-2007, 07:01 PM	#88
talisman Resident Penguin Join Date: May 2003 Age: 39 Posts: 4,598	Re: Global Warming:Real or Fake? skimmed a bit of that essay... it makes a lot of unsourced statements and leaves a lot of unspoken premises unsubstantiated. For example, in the paragraph on the composition of the atmosphere, the argument is made that because carbon dioxide makes up such a small portion of the gases in the atmosphere, it could not contribute to global warming, thus the argument that it does is incorrect. The unspoken premise here is that somehow the percentage must be very high for it to have an effect, yet no evidence is cited in support of this. (in fact, if you want to see what happens when methane and CO2 do compose the majority of an atmosphere take a look at Venus where average surface temperatures have been estimated I think somewhere around 800 degrees).