Since you can't or shouldn't have your head buried in a calculator when you are flying, it behooves you to be able to do some quick math in your head. [Credit: Shutterstock] To find reciprocal course, ...

I know many computer languages, but I’ve struggled all my life to learn a second human language. One of my problems is that I can’t stop trying to translate in my head. Just like Morse code, you need ...

There is Pi all around us, in ways you may not have seen before. If you remember from school, Pi is the ratio of a circle's circumference to its diameter. It is a number that is usually written as ...