You may have heard of doing math in your head. This time we are going to do math on our head. To do this, you measure the circumference of your head. You take that number and divide by Pi, or 3.14. If ...

Professor Marcus du Sautoy explores why we are driven to measure and quantify the world around us and why we have reduced the universe to just a handful of fundamental units of measurement.

This time we are going to do math on our head. To do this, you measure the circumference of your head. You take that number and divide by Pi, or 3.14. If you change the decimal to a fraction ...

Throw away your measuring cups. Credit: Perfect company Deal pricing and availability subject to change after time of publication. Learn more about how we select deals. Baking is a science and ...