Source: Wikipedia
There is a category of problem that looks impossible from the outside and turns out to be merely extremely difficult, and decipherment sits squarely in it.
When Egyptian hieroglyphs…
Ice cubes float. This is so ordinary that it takes a moment to see anything strange in it.
Consider what floating means. An object floats when it is less dense…
Soap is one of the oldest manufactured substances and one of the most consequential, and almost nobody can explain what it does.
The common assumption is that soap is a…
The fossil record is overwhelmingly a record of hard parts.
Bones, teeth and shells survive because they are mineral to begin with. Everything else — muscle, skin, fur, feathers, gut…
Source: Wikipedia
There is a wall in Cusco that tourists queue to photograph because of one stone in it, which has twelve angles and fits its neighbours on every one of…
The question worth asking at the entrance to any tunnel is what problem made digging cheaper than going around. Here are seventeen, and the answers.
1. Pedestrian River Tunnels
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