 Later that same year, together with Martin Gardner, a "Scientific American" columnist whose writing had helped hone Hyman's and Randi's skepticism, they formed the Committee for Scientific Investigation of Claims of the Paranormal (CSICOP).Using donations and sales of their magazine, "Skeptical Inquirer", they and secular humanist philosopher Paul Kurtz took seats on the executive board, with Isaac Asimov and Carl Sagan joining as founding members.Randi traveled the world on behalf of CSICOP, becoming its public face, and according to Hyman, the face of the skeptical movement.