Learn how to enable the Scientific Calculator and use Math Notes on your iPhone, and breeze through Math equations with ease.

For decades scientists have been trying to solve Feynman's Sprinkler Problem: How does a sprinkler running in reverse work? Through a series of experiments, a team of mathematicians has figured out ...

Step-by-step tutorial on how to draw faces from all angles, with easy techniques to master proportions, perspective, and expression for lifelike portraits. Arrest made in the killing of a couple ...