There's a growing momentum behind investing in nuclear energy as it's a reliable and carbon-free source of energy. Cameco's (CCJ 0.95%) management styles the company as a "pure-play investment in the growing demand for nuclear energy," and with good reason. Its mix of uranium mining, nuclear fuel services, and 49% interest in atomic reactor and nuclear plant services company Westinghouse makes it the best stock to buy to play the revival of nuclear power right now. That's a good thing because all the eviden ...