Web pages typically last about 100 days before being changed or deleted. Since 1996, the Internet Archive's Wayback Machine has preserved nearly 900 billion pages, making them accessible to all. https://cbsn.ws/4ebzsWV | CBS Sunday Morning

This year the Wayback Machine turns 20! And we've been archiving web pages since 1996. Many don't realize that the Wayback Machine captures more than just screenshots! It's a complex set of tools. Our intern, University of Southern California computer science student Bridget Bell, lifts up the hood & gives you a look at how the #WaybackMachine actually works. Take it for a spin yourself: https://web.archive.org | Internet Archive