A tricky optical illusion showing circles went viral, leaving viewers puzzled as they tried to count how many circles were ...

Most of the charts you see below are courtesy of Kyle Bland over at Pitcher List. He created a great spring training app ...

For centuries, one of algebra’s oldest puzzles has remained unsolved—how to find exact answers for higher-degree polynomials, ...

Intelligence—natural or artificial—may be a matter of geometric structure, not temporal sequence, challenging how we ...