CRISPIN BOYER is a frequent contributor to
National Geographic Kids magazine. His books include
National Geographic Kids Ultimate U.S. Road Trip Atlas,
National Geographic Kids Everything Castles,
That's Gross!, and
National Geographic Kids Everything Ancient Egypt.
Matt Bellace, Ph.D., has been a youth motivational speaker and stand-up comedian since 1995. Dr. Bellace has a Ph.D. in clinical psychology (subspeciality in neuropsychology), is a member of the National Speakers Association and the author of the book, A Better High. His "How to Get High Naturally" program encourages over a hundred thousand students a year to make healthy choices. Matt was a recurring comedian on truTV's "World's Dumbest." His stand up can be heard - and requested - on Sirius XM's Comedy Channels.