David Murdock spending more than $500 million to unlock health secrets
                                
                                
                                    (Newser) -
                                    The 87-year-old billionaire David Murdock is putting his money where his mouth is—literally, investing more than $500 million to construct the North Carolina Research Campus, a cutting edge food research center that he says will help him live to 125. Murdock, who also owns Dole, the world’s largest...