Contents

11 February 2005
Vol 307, Issue 5711

About The Cover

Cover image expansion

COVER Albert Einstein early in his career (circa 1910). In 1905, Einstein published five seminal papers on the photoelectric effect, special relativity, and Brownian motion. We celebrate the 2005 World Year of Physics that honors Einstein's achievements with a special section focusing on some of the challenges that remain in physics. See page 865 [Photo: Hulton Archive/Getty Images]