Nuclear power generates 20 percent of electricity in the U.S., but the nation's reactors are aging — and new plants are expensive and take years to build. Gas, coal, wind and solar are potential alternatives, but all have environmental or logistical drawbacks.

Hospitals may be the only places in America that aren't crazy for iPads. Security issues and incompatibility with hospital systems are two big reasons why tablet computers haven't caught on. But some doctors and patients say they're great for explaining complex medical issues.

Congress' approval ratings hit an all-time low in December, according to the polling firm Gallup. Host Michel Martin looks at why many Americans seemed to be frustrated with Congress. She hears from NPR Senior Washington Editor Ron Elving and Mark Eaton of the Capitol Steps, a musical political satire group.

WorkingMother.com recently released its list of the year's most powerful moms. Michel Martin and regular parenting contributors Leslie Morgan Steiner and Jolene Ivey discuss what it takes to be a strong mom, who they admire, and who should not have been on the list. Also joining the conversation is Helen Jonsen, editor of WorkingMother.com.

The fungus that causes moldy toenails and rare, serious eye infections lurks in many bathroom sink drains, researchers say. That may help explain an outbreak of serious eye infections among contact lens wearers, and perhaps other health problems as well.

It was a clean photo op aimed squarely at Iowa's many hunters and gun owners. Santorum, wearing a hunter's orange NRA cap, talked about the need to nominate federal judges who would uphold second amendment rights.

Isaiah Cutler, 18, is in jail accused of burglarizing a market with three friends and taking thousands in cash and merchandise. An hour later, he supposedly posted pictures of the fellows and their stash on Facebook. A relative saw the photos, alerted grandma and she called the cops.

A Minnesota man provided live puppies, a llama and a goat to a nativity scene, but the goat escaped. The Fergus Falls Journal reports the goat has been spotted but not caught.