We all remember Rebecca Black. Oh, do we remember. She sang "Friday," that awful but irresistibly catchy tune (viewed 105 million+ times on YouTube!!), which will forever be a part of our culture. Had she sung about Pi Day, however, perhaps the song would have had a more positive reception.

Today, March 14th (3/14), is Pi Day, because the mathematical number pi is rounded off to 3.14. Pi is an irrational number (meaning it cannot be adequately expressed as a fraction of two whole numbers) that is derived by dividing the circumference of a circle by its diameter. 

Pi: Not Just Another Number

Pi is much more than a mathematical curiosity. The number comes up over and over again...

By Marcus Woo

(Inside Science) -- If you're a fisherman, you might be inclined to keep your favorite fishing spot a secret and keep more fish for yourself. But sometimes it helps to tell others. They may return the favor and tell you about other great places.

It's a dilemma that also faces hunters, wild predators like lions, or anyone else searching for a limited resource. When should you share information, and when should you go at it alone? A new study might have some answers.

Researchers developed a mathematical model that can lead to predictive tools for managing fisheries, wildlife conservation and logging. It may even apply to social or financial scenarios like dating or identifying the best stocks to invest in.

These situations are usually complex....