Workers in NASA’s Jet Propulsion Laboratory cheered loudly when the Mars rover "Curiosity" landed successfully and sent back its first photos from the surface of the red planet. John Blackstone reports.
If you have a cold sore - small blisters on the lip or around the mouth - you're not alone. More than half of Americans ages 14 to 49 carry the virus that causes cold sores. The American Academy of Dermatology offers some advice.