Nuts and Bolts: Seven Small Inventions That Change Catherine Hapka The lightweight and breathable fabric

The lightweight and breathable fabric is comfortable and quick drying for whatever your outdoor adventures bring

Maple cream goes great on toast

his sharp-witted tiger companion who springs to life when no one else is watching

It will give you courage and hope

Nuts and Bolts: Seven Small Inventions That Change Catherine Hapka The lightweight and breathable fabricSome 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,