Breathe Out as Hard as You Can
Do it now. Force everything out, then force a bit more, then hold it. There is still air in there, and there is…
There Is No Lens, and There Cannot Be
Every camera works by bending light. A lens collects rays arriving from a point on an object and bends them back together…
It is the only organ that grows back, and most people cannot name what it does. Here are seventeen.
1. It Grows Back, Which Nothing Else Does
Remove a substantial…
Almost Everybody Has the Explanation Wrong
The standard account, repeated more or less universally, is that lying on an arm cuts off the blood supply, the limb is starved of…
Try It Before Reading Any Further
Press a finger against one nostril and breathe in through the other. Then swap. For most people, at most moments, the two are noticeably…
The Universal Misunderstanding
Everybody believes the same thing: the stomach is empty, so it complains. The noise is the body asking for food, and once the food arrives the noise…