Tour the towers that made history and altered the future. Why was New York’s most famous skyscraper dubbed the "Empty State Building?" How big is Japan’s planned "supertower?" Tour the world’s most incredible skylines with award-winning author-illustrator- and captivating storyteller- David Macaulay and trace the amazing stories of skyscrapers. They introduces courageous creators, recounts little known history, and reveals supersized triumphs through spectacular film footage and dramatic recreations.

 Grade level:  4 and up

The Liar Paradox and the Towers of Hanoi: The Ten Greatest Math Puzzles of All Time

A walk through history's most mind-boggling puzzles
Ever since the Sphinx asked his legendary riddle of Oedipus, riddles, conundrums, and puzzles of all
sizes have kept humankind perplexed and amused. The Liar Paradox and the Towers of Hanoi takes die-hard
puzzle mavens on a tour of the world's most enduringly intriguing braintwisters, from Königsberg's
Bridges and the Hanoi Towers to Fibonacci's Rabbits, the Four Color Problem, and the Magic Square.