What's up in

Puzzles

Latest Articles

Solution: ‘A Ticking Evolutionary Clock’

April 3, 2017

How to calculate when a gene’s rate of evolution will slow to a crawl.

A Ticking Evolutionary Clock

March 16, 2017

How quickly will a gene’s rate of evolution slow to a crawl?

Solution: ‘Taming Quantum Weirdness’

March 10, 2017

A simple analogue could offer insights into one of the most astonishing results of quantum mechanics.

How to Tame Quantum Weirdness

February 16, 2017

Can balloon animals help blunt uneasy feelings about “spooky action at a distance”?

Solution: ‘How Many Half-Lives?’

January 27, 2017

When do negative results from a half-life experiment mean a theory is dead?

How Many Half-Lives Do You Have?

January 12, 2017

Gaining an intuition about half-life requires some unintuitive thinking.

Solution: ‘Hanging Far Out Over the Edge’

December 2, 2016

A simple and elegant way to stack identical flat objects so that they project over an edge as far as possible.

How to Hang Far Out Over the Edge

November 17, 2016

What formula describes the farthest you can stack flat blocks over the edge of a table to form a seemingly gravity-defying half-bridge to nowhere?

Solution: ‘Which Forecasts Are True?’

October 26, 2016

Aside from potential clues gleaned from a fluke result, it would take hundreds of U.S. presidential elections to definitely conclude that one election forecasting model is superior to another.

Get highlights of the most important news delivered to your email inbox