Are the environmental effects of nuclear power station worse than coal fired power stations?
Depends. The waste produced by nuclear power stations takes millions of years to degrade, but there is not much of it and if properly stored it can be well managed. A nuclear plant produces very little CO2. However, a coal plant is massively inefficient (only aabout 20% of the energy from the coal goes towards electricity) and produces tonnes of greenhouse gases including CO2. In terms of climate change, nuclear power is a far better option than coal-fired.