Researchers are using a nuclear submarine to take them beneath the Arctic ice cap to study ocean currents that may have an effect on global climate.

CNN: Nuclear sub dives under the ice to explore climate change

We set out to find one of these undervalued, large-cap power generators that could best weather the nuclear uncertainty, despite nuclear holdings.

FORBES: Undervalued Utility Stock Buy

Mike Fitzpatrick, vice president of energy at MF Global, attributed the sell-off to a series of rumors, including the liquidation by a large bank, a cap on commodities, and Iran making a nuclear deal.

FORBES: Crude Takes A Header

Edison submitted a tentative request to the Nuclear Regulatory Commission, technically known as a license amendment, that if approved would cap Unit 2's capacity at 70 percent, down from the now-required 100 percent.

NPR: San Onofre Submits Draft Linked To Restart Bid

Obama backed a cap and trade approach in 2008 and put forth a clean energy standard, which included nuclear and natural gas, to advance policies around climate change, neither of which gained enough Congressional support to become law.

FORBES: Obama Versus Romney On Energy -- In Depth This Time

For the soon-to-merge German utilities Viag and Veba, both of which trade at an enterprise value (market cap plus debt) of less than six times operating income, government threats to shut down nuclear plants are enough to scare away investors--both financial and strategic--no matter how cheap the stocks.

FORBES: Bargains And Dogs