Question

what are the advantages of nuclear fission

Answer 1

"Nuclear fission is an efficient source of power. The energy released from the fission of an atom of uranium is 10 million times the energy produced from the combustion of a carbon atom in coal. As fission uses less ore than that used by coal plants, the environmental costs associated with its mining and transport, such as fuel for transportation and pollution from the transport trucks, are also reduced. There is no everyday pollution from nuclear power plants, and the nuclear generation of energy does not lead to global warming. In addition, this method of energy production does not deplete the supply of fossil fuel."
Read more : http://www.ehow.com/info_8493582_advantage-disadvantage-nuclear-fission.html

Also, no CO2 & some other forms of toxins (eg, smog)
http://occupytheory.org/advantages-and-disadvantages-of-nuclear-fission/