Coal: radiation from radon in the coal, mercury poisoning from same, co2 emissions.
Geothermal and hydro: limited supply, environmental concerns.
Gas: Same as coal less mercury.
Solar and wind: same as geothermal and hydro plus need for hydrocarbon backup for when the sun or wind arent available. Long transmission lines required, NIMBY. Transmission line losses 10%.
Current nuclear: risk of meltdown, production of long term hazardous waste.
Fusion: a bit of a pipe dream at this point, which is untested and a very complicated technology at best.
The problems of all of the above except nuclear are inherent, and thus can't be fixed.
There is a better approach to nuclear: LFTR reactors. Liquid Fluoride Thorium Reactor!
LFTR: by product can be vehicle fuel and/or fertilizer, low pressure in reactor no high pressure water or hydrogen to blow up, design inherently self-shuts reactor down in emergency without technology, fuel is cheap and widely available, fuel usage near 100% so no long term waste problem. Unlike fusion, this has been successfully tested in a working plant in the 60's. Plants can be located near users so line losses low, and environmental impact reduced.
Interesting? http://www.youtube.com/watch?v=P9M__yYb ... ure=relmfu . Long but very very interesting.
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