Here is an optical illusion challenge that will test your visual processing speed, attention to detail, and focus. There is a ...

How did you learn the mathematical formula for pi? It was likely the way I learned it. I was told to commit the value pi = 3.14 to memory along with the formula to calculate the area of a circle.

Hands of a child learning about patterns of size and color with colorful wooden blocks. Source: myboys/Shutterstock Part of what makes us human is the need for our brains to search for meaning. Good ...