• How were the pyramids built?
• How does a zipper zip?
• How does Wo-Fi work?
• How does a robotic arm work?
• How do chefs use math?
• How does a hybrid car work?
• How do ice skaters spin so fast?
• How does a 3D printer work?
"If you've ever wondered how things work -- what makes them tick, turn, grow, or compute . . . will answer most of your questions.
With full-color photos and facts galore . . . this updated edition includes new questions that explore innovations in transportation and home tech, climate change, wildlife conservation, space exploration, and more."
Brand new in original shrink-wrapping. Hard cover edition.