Why your brain prefers the fake. Tinbergen built eggs more vivid than anything in nature — and the birds preferred them.

It takes less than a fifth of a second. Before you have chosen to look, your brain has already decided what it wants.

Stress is not an event. It is an accumulation — and your body keeps a ledger that your mind never sees.

The ocean is Earth's last blind spot. We have better maps of Mars than of our own seafloor.

There is a temperature at which a healthy young adult, sitting still in the shade, will die. That number is lower than you think.

30,000,000,000,000 cells make up your body. Not one of them is you.

Do the math. The universe is 13.8 billion years old. You will live, if you are lucky, for about 80 of them.