Over 60 flaps to lift to discover the wonderful, mysterious and often funny stories behind some of the world's most ground-breaking inventions. Featuring eye-catching illustrations, quirky facts, and surprises such as flaps within flaps. With internet links to websites to find out more and design your own inventions. Chapters in this book include: - How inventions are invented - Engine power - Flying machines - Electricity and light - Wire, sound... - ...and wireless sound - Seeing things - Fighting disease - Boom! - Making pictures - Crazy contraptions