From Columbia Business School in New York City, CNBC brings together two of the most successful men in business -- Bill Gates and Warren Buffett -- for an hour-long question and answer session with students.
Abbott Laboratories' Niaspan beat Merck's Zetia in a new study. Dr. Steven Nissen, chairman of the Department of Cardiovascular Medicine at The Cleveland Clinic, shares his reaction with CNBC's Mike Huckman.