The best free AI courses and certificates for upskilling in 2026 - and I've tried them all

I've worked with AI for decades and have a master's degree in education. Here are the top free AI courses online that I recommend - and why.
Hackaday

Optimizing Software With Zero-Copy And Other Techniques

An important aspect in software engineering is the ability to distinguish between premature, unnecessary, and necessary ...
NPR

Science

January 15, 2026 • Four people from NASA's Crew-11 mission splashed down off San Diego, successfully completing five months aboard the International Space Station. The trip was cut short due to a ...