Nuts and Bolts: Seven Small Inventions That Change Monica Chenault-Kilgore Are you fast enough to

Are you fast enough to spot the animal

extraordinary debut about Zoe and Jack

If he has a weakness

Fleece lining for warmth and comfort

Nuts and Bolts: Seven Small Inventions That Change Monica Chenault-Kilgore Are you fast enough toSome of humanity's mightiest engineering achievements are small in scale and, without them, the complex machinery on which our modern world runs would not exist. In Nuts and Bolts, structural engineer Roma Agrawal examines seven of these extraordinary elements: the nail, the wheel, the spring, the magnet, the lens, the string, and the pump. Tracing the evolution from Egyptian nails to modern skyscrapers, and Neanderthal string to musical instruments,