Many stop lights at street intersections display a countdown of the remaining seconds before the light changes. If you’re like me, you count this time in your head and then check how in sync you are.

For thousands of years, we’ve divided days into 24 hours, hours into 60 minutes, and minutes into 60 seconds. But why do we have to do that? Here’s the story of the one gloriously failed attempt to ...

About face The Clockwork Conspiracy conjures up a world where decimal time becomes reality which is not as mad as it seems: this decimal clock was made by Pierre Daniel Destigny c. 1798–1805. (CC ...

Henri Poincaré was the brilliant mind who gave us the beginnings of chaos theory and Poincaré conjecture. He was also the doggedly persistent nut who was the last member of resistance to a twenty-four ...