PrimeWire

You can now watch the entire Scientific American Frontiers Season 15 Episode 3 movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

Scientific American Frontiers: A look back at the decades of effort that culminated in the deep sub Alvin reaching the ocean floor, and a look forward to what's next now Alvin's retiring.