As travel abroad has become common for more Americans, many have enjoyed Europe’s vibrant squares. Why doesn’t the United States have more of that kind of gathering spot and is change afoot?

Discover how the Luhn Algorithm verifies credit card accuracy, supports secure transactions, and helps prevent errors in inputting Social Security numbers.

All 16 videos and supporting material from the Spring 2025 version of Stanford's CS193p course are now online, for free.

By combining custom engineering with behavioral science, Swedish YouTuber Mattias Krantz taught an octopus named Tako to play the piano.