Nuts and Bolts

In her new book Nuts and Bolts: Seven Small Inventions That Changed the World (in a Big Way) , structural engineer Roma Agrawal identifies and examines the seven of most basic building blocks of engineering that have shaped the modern world: the nail, the wheel, the spring, the lens, the magnet, the string, and the pump. Click here to get the book! Available for pre-order at W. W. Norton in the US and Bookshop.org in the UK . Nuts and Bolts Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus . Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.