& Hellman

HAL HELLMAN is the internationally acclaimed author of 26 popular science books, including the six-book series The World of the Future. He has also written science articles for such periodicals as the New York Times, Omni, Reader's Digest, Psychology Today, and Geo.

HAL HELLMAN is the internationally acclaimed author of 26 popular science books, including the six-book series The World of the Future. He has also written science articles for such periodicals as the New York Times, Omni, Reader's Digest, Psychology Today, and Geo. See less