Wikipedia says 72,000 estimate in 2007. But I never know if that's including the 35,000 students or not.
Energy is good but also a less trivial problem. Nuclear? Solar thermal with salt reservoirs? Hot dry rock? Proper pollution fees would help level the playing field, though capital-intensive things like renewables are relatively better done by governments than fuel-based power, since government has lower borrowing costs (http://www.eurotrib.com/story/2010/4/25/62541/6173 ) I think we should do something but it's less obvious what.
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Energy is good but also a less trivial problem. Nuclear? Solar thermal with salt reservoirs? Hot dry rock? Proper pollution fees would help level the playing field, though capital-intensive things like renewables are relatively better done by governments than fuel-based power, since government has lower borrowing costs (http://www.eurotrib.com/story/2010/4/25/62541/6173 ) I think we should do something but it's less obvious what.