Swayze battles cancer. Dems dig in. 101-year-old man to run London Marathon. Disturbing new study about colonoscopies. The new world's richest person. When are we going back? All in today's Buzz.

Born: March 6, 1475
Died: Feb 18, 1564 An Italian sculptor, architect, painter and poet in the period known as one of the greatest artists of all-time.

Born: March 6, 1926
As Chairman of the United States Federal Reserve, Alan Greenspan was, arguably, the most powerful and influential financial figure in the world for decades.