Some people may say that no matter how much extra energy we dump into the environment, it will have no effect on the climate.
I have wondered about that for many years, so far I have no conclusive evidence that increasing the amount of energy in the atmosphere or elsewhere in the environment is causing the global climate changes. I have not been able to find any information on the total amount of extra energy that has been released into the environment due to the creation of daughter elements from radioactive processes within nuclear power plants or other nuclear industry activity.

There are various web sites that explain nuclear activity, but they fall short of the type of information that is needed to figure out the total energy that is generated by all the nuclear activity that is happening in our environment.

http://encyclopedia2.thefreedictionary.com/Radioactivity+in+the+Atmosphere

http://www.bing.com/images/search?q=radioactive+waste&qpvt=radioactive+waste&qpvt=radioactive+waste&FORM=IGRE

http://www.quora.com/What-is-the-total-mass-and-volume-of-all-the-stored-nuclear-waste-in-the-world

https://en.wikipedia.org/wiki/Nuclear_power

http://www.world-nuclear.org/info/Nuclear-Fuel-Cycle/Introduction/Physics-of-Nuclear-Energy/

It seems to me that the efficiency of any nuclear power plant is very low and most of the energy that is generated is in the form of radioactive isotopes that are distributed into the environment, possibly contributing to the global changes in the environment.