Nuts and Bolts

For centuries, the world's greatest minds were stumped by the deadly mystery of longitude, until an obsessive underdog entered the fray and changed navigation forever. Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start ...  Show more

This is the seventh episode of our ongoing series breaking down the U.S. Constitution. This month, Roman and Elizabeth discuss Article IV, which outlines the relationship between states and between states and the federal government. They add the 10th Amendment to the conversation ...  Show more

Datshiane Navanayagam meets two engineers who want more women to become inventors. Roma Agrawal is best known for her work on The Shard, the UK’s tallest building. She’s also the author of Nuts & Bolts, a book which explores the history of seven tiny but fundamental inventions th ...  Show more

The 15th edition of the Encyclopedia Britannica, published in 1974, cost $32 million to create. The largest investment in publishing history. And yet you can now buy the complete set for pennies. Who invented encyclopedias? Who wrote for them? And why did Samuel Taylor Coleridge ...  Show more

The two key ingredients that enabled the mass production of steel. We travel to Sheffield - the birthplace of modern steelmaking - to get up close to the technological mid-wife, a Bessemer converter. Plus we visit the modern Forgemasters steelworks, to get a taste of just how har ...  Show more

How do you define a "big book"? It might be a new offering from a beloved author or a deep dive into a timely subject or a story that has generated unusual enthusiasm among editors and other early readers: One way or another, these are the books that build "buzz" and create mo ...