Nuts and Bolts: Seven Small Inventions That Changed the World in a Big Way -- Roma Agrawal, Hardcover Tonino Guerra and a young Asia Argento

and a young Asia Argento in her very first film role

When some 70 percent of teachers quit within their first five years

With an Introduction by David Nicholls

What she discovers pits Jules against the clock as she races to unmask a killer

Nuts and Bolts: Seven Small Inventions That Changed the World in a Big Way -- Roma Agrawal, Hardcover Tonino Guerra and a young Asia ArgentoSome 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,