Making Every Part of a Book from Scratch Is So Much More Work Than I Thought

A book is a very simple thing, right? It’s just a bunch of paper with some scribbles. But if you wanted to make a book from scratch, it’s basically an impossible task. Watch as Andy George from How to Make Everything chops wood, strips papyrus, makes glue from hide, carve out a pencil from a stick, make a brush from…

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What Are Capacitors and Will They Really Charge Your Phone in Seconds?

Your phone died. Again. In these scenarios, who among us has not dreamed the dream of a future where our devices charge instantly and last forever. As capacitors—or even more exciting, ultracapacitors—get better and better at storing energy, they could replace batteries and realize at least one half of that dream.