Reactor accidents and radiation leaks aren't the only risks with nuclear energy; nuclear weapons are another problem.
Engineers who design nuclear plants can plan a worst case scenario, but this may not be enough to prevent all accidents.
Both India and China have big expansion plans for nuclear power. Here's a look at why they are expanding and what the risks are.
We donÃ¢Â€Â™t know what it will cost to build the next nuclear power plant in the US.
Greenhouse gas emissions from nuclear power are low by just about any measure.
Radioactive waste is an unavoidable by-product of nuclear power that requires safe storage.
A facility processing uranium ore into nuclear power plant fuel can process the ore into fuel for a nuclear weapon instead.
Nuclear power results from radiation, which was discovered around 1900. It took several decades after that for scientists to understand how to harness its energy Ã¢Â€Â“ for power and for weapons.