Alien Robot Kit

Make Science Spring to Life!
Build six kinetic alien robots complete with motors, levers, gears, axels and propellers, while learning the physics and theories behind the models with a science-packed companion book!

Top Secret

Shady Tales of Spies and Spying!
Covering tools, techniques, gadgets, gizmos, history and famous agents—explore the life of a spy and learn the sneaky secrets and strategies you need to become an expert agent.