The books on science that we did were the fruit of a fabulous collaboration between us and the SF Exploratorium, the finest museum in the world (personal opinion). Paul Doherty, PhD physics MIT, was their chief scientist and the source of all scientific knowledge as far as I was concerned. Our other mentor was Martin Gardner for all things magic and odd. Check out Martin’s wiki article sometime. His brain was bigger than anybody’s. We worked w him on titles that were on magic or mischief...world class guy.