We have real problems, here on terra firma - real problems, right now. Hunger, malnutrition, poverty, disease. Forget what the future holds for as catastrophic as some in the UN paint the dire global warming scenario - starvation will come first before anyone has water problems.
Assume that the supply remains the same or increases by a small percent each year.
6 billion people need to be fed.
China has 12% arable land. Its population increases and its ability to feed its people decreases. It buys up large supplies of food otherwise used for other areas of the world.
Someone will suffer. Someone will die.
Farmers are converting their fields to cash crops - in this sense - cash crops being biofuel crops. Not wheat or grains ... they pay much less.
As the farmers do this, someone will suffer, someone will die.
Combine China and the farmers converting their fields ... and you have major problems today and tomorrow it will be dire straits for millions upon millions.
As more conversion occurs, costs will rise.
Food for the world
The result will be someone will suffer, millions will starve.
And those cows we eat - need feed and that feed is now much costlier
http://business.timesonline.co.uk/tol/business/markets/united_states/article2080599.ece
The result will be millions starving, costs increasing by hundreds of millions world wide and the benefit - not much.
Build a nuclear power plant or four, cut back on use of petroleum by reducing plastics ... and you'll help the earth more than all the corn/fuel you produce and people won't starve and die and you'll be able to expend all your energy worrying about the glaciers melting and learning to swim.
It must be nice to have a clear conscience.
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