There are many positive and negative aspects associated with nuclear power. what is a positive aspect associated with nuclear power?
a) there is a high ratio of energy to cost.
b) there is a risk of possible meltdown, a tragedy on a global scale.
c) exposure to radiation can lead to disease or genetic abnormalities.
d) the waste that is produced is toxic to the environment and to the general population.

A)There is a high ratio of energy to cost

Positives:

A Chunk of Uranium can power a city a lot longer than a chunk of coal. 
It also does not contribute to pollution since what comes out of the tower is steam.

Negatives:

It is very expensive to build and maintain a nuclear power plant at first so investors whom want money up front are more reluctant to loan money for one.

If the plant does melt down it is very bad for the enviroment and its people, for example Chernobyl Nuclear Power Plant in the Ukraine will not be able to be lived in for approximently 20,000 years.