I know enough to know that if you're worried about pollution from Nuclear then you should be worried about all the waste products in production of solar panels which can be extremely toxic. And that if you're specifically talking about the amount of radiation a megawatt reactor will produce in it's life time you should never venture anywhere close to a coal burning plant because the amount of radioactive material they let loose into the atmosphere is orders of magnitudes greater than you could get from a uranium reactor, with thorium reactors being predicted and shown in small scale testing to have significantly less dangerous byproducts left over. With several theories and proposed designs for fusion and thorium reactors that could recycle spent fuel and further reduce the amount of high level waste a facility would have at the end of it's life cycle, because unlike all other forms of energy generation, the nuclear facilities contain and keep their waste products on site for decades and only transfer it off site during decommissioning.