The idea of an atom began with the Greek philosopher Democritus, who proclaimed all matter consisted of tiny particles. He called them ''atomos,'' the Greek word for ''invisible.'' He couldn't prove they existed but centuries later other scientists did. That discovery heralded the nuclear power movement, which has been sparking controversy and debate ever since.

Proponents maintain that nuclear power is an economical, safe and clean form of energy. Critics cite industry disasters, problems of nuclear waste and links to chronic and sometimes fatal diseases. Massive anti-nuclear protests occurred throughout the '70s and '80s and have continued on a smaller scale into the 21st century. It is impossible for an issue of this magnitude to be cut and dried. Persuasive arguments can be made in favor of or against nuclear power. Here's s a list of 10 pros and cons that might help you navigate the debate.