Want to learn AI without spending a fortune? These free Harvard courses cover programming, data science, and machine learning.

Everything on Slate about The Slate Quiz Think You’re Smarter Than Slate’s Managing Audience Development Editor? Find Out With This Week’s News Quiz.

Boost your career with Harvard’s 6 free online courses in AI, Python, and Web Development! Learn about the 2026 course list, duration, and how to enroll for free at pll.harvard.edu.

Fifty-seven years ago, a computer at UCLA tried to send the word "LOGIN" to a machine at Stanford. It managed two letters ...