Pi belongs to a huge mathematical group called irrational numbers, which go on forever and cannot be written as fractions.

From there a day of celebrating science and mathematics was born: Pi Day. More than three decades on and the day is ...

DK Metcalf will be wearing No. 4 with the Pittsburgh Steelers, a change from his No. 14 with the Seattle Seahawks. He had ...

If you keep seeing the same 3- or 4-number sequences everywhere – on clocks, receipts, or license plates – you might be ...