to the bottom of the internet

The internet allows us to see videos, photos, and news from anywhere in the world almost instantaneously.

But how?! In this video we learn about the hundreds of underwater fiber optic cables that connect continents, cities, and data centers all over the world and investigate how these cables are made, how they’re installed, and more.

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Fiber optic cables: How they work

Make called Bill a "brilliant science-and-technology documentarian", whose "videos should be held up as models of how to present complex technical information visually" Wired called them "dazzling."

Scientific American's blog called him a "smart, easygoing everyman with a firm understanding of the science."

Here Bill uses a bucket of propylene glycol to show how a fiber optic cable works and to show how engineers used them to send signals across oceans.