Math

It's a ubiquitous badge of mathematical pride. But what *is* it?

How a routine trip to the art museum became a meditation on the empty set

Asking people how many others agree with them could yield more accurate estimates

Chemists have synthesized the most complex molecular knot ever, using a strand just 192 atoms long. The advance could lead to new tougher materials. Christopher Intagliata reports.

Wilson's theorem is why we can't have nice things

Feldman creates mathematical models that reveal how cultural traditions can affect the evolution of a species

How to calculate percentages is easier than you think. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head.

A post to commemorate this blog's fourth trip around the sun

Where does the shortstop play in a paradigm shift?

Barbara Kiser, books and arts editor at Nature, talks about her favorite science books of 2016, especially three works about the little-known history of women mathematicians.

Because prime numbers didn't let us down this year.

All train lines lead to Paris