We've all heard that perpetual motion machines are impossible (at least as far as our understanding of the universe goes) but why? We look at how our understanding of thermodynamics forbids perpetual motion machines to be a thing. And I bungle the lyrics to a Faith Hill song.

TechStuff Redux: How Google DeepMind Accidentally Started the AI Race
40:39

This Founder's Failed Social Networking Site Led to a Multi-Billion Dollar Idea - The Story
35:38

The Quantum Shift in Biomedical Discovery
44:16