Dr. Conrad Murray pled not guilty to manslaughter in court and is free on bail. As Ben Tracy reports, Dr. Murray faces up to four years in jail if convicted.
"Caught on Tape": Sea Shepherd anti-whaling ship and a Japanese whaling ship collided multiple times in the Southern Ocean, creating a long, deep gash on the side of the ship.
Football players are often the victims of sports-related head injuries but pro-athletes aren't the only ones at risk. The CDC estimates that about 300,000 student athletes suffer concussions each year. Dr. Jennifer Ashton reports.
