One of the great episodes in the history of mathematics began on October 23, 1852. In a letter to Sir William Rowan Hamilton, Augustus De Morgan wrote, “A student of mine asked me today to give him a ...

I'm a longtime iPhone user, but I still have Google Maps installed on my phone. Apple Maps has come a long way since it launched and is a great navigation option. Yet, I still find myself turning to ...

Imagine you're a mapmaker, ready to finish your masterpiece map of the world. The only thing left to do is add the colors. But how many colors do you need for the countries if you want to make sure no ...