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6 subjects. 165 things to find out, make and try. Everything works without signing in.
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- The Chemical History of a Candle
6 parts, in order
Six parts, one candle. Follow a flame all the way down to what it is made of, and finish somewhere you did not expect: your own chest.
- The Dice Cannot Remember
6 parts, in order
Six short chapters that take chance apart. It turns out to be counting, and once you can count it you can catch yourself getting it wrong.
- How to Know Where You Are
6 parts, in order
Six parts, one question. Half of your address is free and the other half took four hundred years to buy — and the answer is sitting in your pocket right now.
- A Bone Is Two Materials at OnceMake
Soak a clean chicken bone in vinegar for a week and you can tie it in a knot. Nothing was added. One of its two ingredients was taken away.
- A Cave Is Dissolved, Not DugTry
Nothing pushed the rock aside to make a cave. The rock left as a liquid, one speck at a time, through the same crack the water came in by.
- A Coastline Has No LengthTry
Two countries measured the same border and got answers 227 kilometres apart. Neither had made a mistake. They had used different measuring sticks.