Early last Saturday, I received a short, sad email from an old friend. Many of you may know Leonard Hayflick, who first pointed out that cells age, more than fifty years ago. He stood up for himself and for the truth of his data, in the face of strong opposition and irrationality, and finally proved […]

Perseverance is critical to innovation. If you try to change the world, you might fail, but if you don’t try, you will certainly fail. In 1616, the church banned Galileo’s theory that the Earth went around the sun, which is now accepted as obviously true. Relativity and quantum theory were once derided by classical physicists, […]