ruveyn wrote:
androbot2084 wrote:
This is absolutely stupid. The Earth is turning into a Venus inferno because of global warming and the environmentalists are still looking for bean fart power solutions to supply our energy needs.
That is Carl Sagan crap. No way are we turning into Venus.
ruveyn
Possibly, the global warming argument is over-exaggerated. Venus is closer to the sun and has about 100 bars of pressure on the surface, and an atmosphere of mostly CO2. There are just too many orders of magnitude of difference between the parameters describing Earth and Venus, for a meaningful comparison to be made. We'll probably get bit by economics and extraction rate limitations before global warming becomes a real problem.
Speaking of which, androbot2084 is straight on about the bean-fart-power thing. I submit, without proof, the statement that the replacement of coal, oil and gas with anything but nuclear and nuclear-derived energy carriers, will not be feasible. All other "alternatives" not yet fully tapped out, as a class, are characterized as low-yielding and/or uneconomical, and thus unsuitable for energy replacement in bulk. Even in part, Europe's partial reliance on wind and implementation of the "negawatts" concept has raised the price of electricity in some areas to something like 30 cents or more per kWh, as compared to something like 10 cents per kWh in the US.
Of course, I'm talking out of my hat on all this, and I state the above as more of an observation than as something I'm trying to prove. I wouldn't mind being proven wrong, as that might lead to another promising new avenue of research, and we certainly could use that. Go ahead, prove me wrong. Come on, I dare ya.
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