Elements Puzzle

Theodore Gray is the author of The Elements: A Visual Exploration of Every Known Atom in the Universe; Theo Gray’s Mad Science: Experiments You Can Do At Home, But Probably Shouldn’t; Mad Science 2: Experiments You Can Do At Home, But Still Probably Shouldn’t; and Popular Science magazine’s “Gray Matter” column. With his company Touch Press, Gray is the developer of best-selling iPad and iPhone apps, including The Elements, Solar System, Disney Animated, The Orchestra, The Waste Land, and Skulls by Simon Winchester. He lives in Urbana, Illinois.

Nick Mann is the photographer of The Elements: A Visual Exploration of Every Known Atom in the Universe. Aside from having photographed more elements and compounds than probably anyone in the world, he is an accomplished landscape, sports, and event photographer. He lives in Urbana, Illinois.