>Nuclear power may be the only energy source to sustain >that population density without fossil fuel. The fraction of energy produced by conventional nuclear can not be expanded because of a shortage of fuel. Global oil production will "peak" this decade. The best source of information on oil production can be found at http://www.peakoil.net/ and http://www.hubbertpeak.com/ North American natural gas is "cliffing" now. When it becomes a social crisis depends upon the weather. More in http://www.dieoff.com/synopsis.htm I have to go back to work. Good luck, Jay -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu