Twelve historical coincidences, one chapter each: King Umberto's double, Poe's Richard Parker, the wrong turn in Sarajevo, and the name that surfaced twice in a lifeboat. Names, dates, and records you can check yourself.

Forty-two cognitive biases, from the bias blind spot to the peak-end rule: the shortcuts that make judgment fast, and the exact place each one quietly breaks.

Twenty-four martial arts, from karate and taekwondo to capoeira, sambo, and MMA: how each one fights, where it came from, and what makes it distinct.

Forty-three famous paradoxes, from the grandfather and Zeno's races to Schrodinger's cat and the birthday problem, each explained and why it breaks logic.

From conservatism to Nazism, here are all 23 major political ideologies - what each one actually believes, explained in plain English.

From the sighing fields of Limbo to Lucifer frozen at the center of the Earth, here are the nine circles of Dante's Inferno and the strange logic that decides who goes where.

From island castaways with no boats to a treasure map no one can follow, these are 12 historical mysteries that researchers still can't explain.

We like to think of artificial intelligence as a hyper-competent tool: a…

There are places on this planet designed so that virtually no one…