Books in the How'd They Do That? series

People who lose limbs now have incredible options to help them walk and do other everyday activities. Read this book to learn how engineers are creating bionic limbs to help patients.

After travelling millions of miles through space, roving robots gently landed on Mars and then drove across its surface. Read this book to learn how engineers accomplished these amazing feats of space exploration.

Reusable rockets are making space travel cheaper and more common. Read this book to discover how engineers bring huge rockets to a safe, gentle landing.