How frequently do you think about fasteners like screws and bolts? Probably not very often. But some of them a storied history, dating back to Egypt in the 3rd century BC. They aren’t just ancient history. They help hold up our bridges and homes today. Join us as we dissect a handful of engineering inventions that keep our world spinning and intact.Guests:Roma Agrawal - structural engineer and author of "Nuts and Bolts: Seven Small Inventions That Changed the World (in a Big Way)"Ron Gordon - watchmaker, New York CityFeaturing music by Dewey Dellay and Jun MiyakeYou can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!Big Picture Science is part of the Airwave Media podcast network. Please contact advertising@airwavemedia.com to inquire about advertising on Big Picture Science.  Learn more about your ad choices. Visit megaphone.fm/adchoices