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.Theodore Gray is the author of the bestselling book The Elements: A Visual Exploration of Every Known Atom in the Universe and Theo Gray's Mad… Science: Experiments You Can Do At Home, But Probably Shouldn't. He is the author of Popular Science magazine's monthly column, 'Gray Matter' and the proprietor of periodictable.com. He is also cofounder of Touch Press, an ebook company that is defining the future of publishing, and the cofounder of Wolfram Research, creators of the world's leading technical software system, Mathematica© and Wolfram ? Alpha(tm). He lives in Champaign-Urbana, Illinois.C. Marina Marchese is the founder and owner of Red Bee Honey, which sells honey and natural products to gourmet food shops and fine restaurants all over the United States. (www.redbee.com)nbsp; Certified by the American Apitherapy Society, she has trained as a honey judge at the University of Georgia and serves on the board of the Back Yard Beekeepers Association of Connecticut.nbsp; Marina has written for Bee Culture magazine and The Journal of AmericanApitherapy Society, and Red Bee Honey was the cover story of the American Bee Journal in 2004.nbsp; A graduate of the School of Visual Arts in New York City, she is also an award-winning illustrator and designer.nbsp; Marina lives and tends bees in Weston, Connecticut. nbsp; nbsp; After receiving a degree in horticulture from UW Madison, Kim Flottum worked four years in the USDA Honey Bee Research Lab, studying pollination ecology. After that, he spent two years raising acres of fruits and vegetables, where bees played a large role. He brings this experience, plus nearly 20 years of writing and editing articles for beekeepers in the monthly magazine, Bee Culture. He is the publisher of books on honey bee pests and diseases, marketing, queen production, beekeeping history, beginning beekeeping, and the classic industry reference, The ABC & XYZ of Bee Culture.