Physicist Stephen Hawking died March 14 at the age of 76. Millions grieved the passing of the brilliant scientist and bestselling author (his book A Brief History of Time: From the Big Bang to Black Holes, sold more than 10 million copies), who became perhaps the greatest scientific celebrity since Albert Einstein. His death, many noted, came on Pi Day. Just weeks earlier, the world saw the passing of another cultural titan—that of the legendary evangelist Billy Graham, who died... Read more