Of course, we here at Bas Bleu think a book being simply a book is wonderful enough… but this book is truly astounding! Each exquisitely engineered page features an interactive pop-up paper contraption that demonstrates "science at play in our everyday world." Young and old alike will enjoy exploring the fascinating wonders at work within a fully functional (and 100% paper) musical instrument, decoder ring, perpetual calendar, speaker, spiralgraph, and planetarium. Super cool!