text:  An execution in Oklahoma this morning. 66-year-old Richard Rojam died by lethal injection at the state penitentiary in McAllister for kidnapping, raping, and stabbing his 7-year-old former stepdaughter to death in 1984. Don't count on a daily multivitamin to guarantee you a long life. A new NIH study finds that if you're over the age of 20 and healthy, they probably won't extend your time here. Medical contributor Dr. Celine Gounder says for others, they're important. People with