Nuts and Bolts: Seven Small Inventions That Change Monica Chenault-Kilgore If he has a weakness

If he has a weakness

tonight is going to be different for Nick Holloway and Jenny Parrish

The difference between weather and climate

Are you fast enough to spot the animal

Much more than your average weeknight cookbook

Nuts and Bolts: Seven Small Inventions That Change Monica Chenault-Kilgore If he has a weaknessSome 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,