Most of us first hear about the irrational number π (pi)—rounded off as 3.14, with an infinite number of decimal digits—in ...

Even "numbers people" can be confused by the array of digits used to describe climate progress and failings. Here's what they really mean. https://p.dw.com/p/53mCW As ...

To compare numbers, you need to look to see if a number is 'greater than' or 'less than' another number. You can use symbols to help you compare numbers: Small numbers are easy to count, but when ...