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159 comments on DrumBeat: February 4, 2008

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shargash on February 4, 2008 - 12:20pm Permalink | Subthread | Parent | Comments top

I don't think it has to be very deep to be a problem. If you're talking about flooding an area the size of the state of Iowa to a depth of several inches, and then replacing the huge amount of water that evaporates every day, you're talking about water use on a scale that is mind boggling. We're already having trouble getting enough fresh water to irrigate the crops we already grow.

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rainsong on February 4, 2008 - 3:09pm Permalink | Subthread | Parent | Comments top

Profitable algae to biofuels has not been accomplished. It is like solar photovoltaic cells and making electricity. It can be done but is not practical or profitable on a large scale compared to more competitive power generation. Cellulosic ethanol is so far from profitable it might bankrupt any nation attempting to convert to it.

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