Michele Norris speaks with Dr. Dimitri Christakis, director of the Center for Child Health, Behavior and Development at Seattle Children's Hospital, about how parents can navigate the world of children's TV programs. A new study done at the University of Virginia with a group of 4 year olds found those who'd watched the fast-paced cartoon SpongeBob SquarePants performed worse on mental function tests than their peers who watched the slower-paced cartoon Calliou or who simply spent their time drawing. Christakis says young children's brains get over-stimulated by the faster-paced programs — and urges parents to think about what kind of television-watching experience they want their children to have.

A federal judge in Florida ruled that the right of doctors to free speech wouldn't interfere with gunowners' rights to bear arms. She enjoined a state law that effectively restricted what doctors could ask patients about gun ownership.

As people near the end of their lives, many fear dying without leaving something behind. "Dignity therapy" helps patients document their life stories in their own words. The majority of patients who try it report an increased sense of meaning and purpose after treatment.

The plans offered by health insurance companies are an alternative to traditional, government fee-for-service Medicare. Nearly 12 million seniors are in the plans, about one-quarter of all Medicare beneficiaries.

Now there's money riding on Rep. Bachmann's claims that a cervical cancer vaccine is harmful. Two prominent bioethicists said they will pay more than $10,000 if claims that the HPV vaccine caused mental retardation can be proved.