With major eclipses, brilliant supermoons, and lineups of five or more planets, 2026 offers something awe-inspiring in every season. Here’s what to watch for. Solar prominences and their associated ...

MIT professor Joseph Weizenbaum developed Eliza in the mid-1960s. His views on artificial intelligence were often at odds with many of his fellow pioneers in the field. Illustration by Meilan Solly / ...

Learn how to implement a classic substitution cipher in C! This step-by-step tutorial walks you through encoding and decoding messages by replacing each letter with another according to a fixed key. A ...