Harvard's free programming classes teach you how to think, debug, and adapt in an AI-driven world where knowing code matters more than ever.

AI technologies need to be safe and transparent. There are few, if any, benefits from being outside efforts to achieve this.

Dec. 31, 2025 Microplastics in rivers, lakes, and oceans aren’t just drifting debris—they’re constantly leaking invisible clouds of chemicals into the water. New research shows that sunlight drives ...