8/22: Autism risk could rise with father's age; Curiosity takes first test drive on Mars
August 22, 2012 5:11 PM
A new study by scientists in Iceland says the age of the father at the time of conception - not the age of the mother - can raise the risk of autism in a child. Jim Axelrod reports; And, sixteen days after landing on the red planet, NASA took the Curiosity rover out for a spin for the first time. Ben Tracy reports.