Optical illusions are more than just fun visual puzzles, they are a fascinating intersection of art and science that challenge and test your observation skills, attention to detail, and IQ.

Humans are natural pattern recognizers. Whether, as in prehistoric times, we were recognizing danger in a telltale rustle of the bushes or skimming a page of letters and numbers today, we use patterns ...

Phil Goldstein is a former web editor of the CDW family of tech magazines and a veteran technology journalist. He lives in Washington, D.C., with his wife and their animals: a dog named Brenna and two ...