"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When 2D puzzles are no longer exciting, 3D brain teasers are the way. These handheld puzzles require ...

A Cognitive Skill is the ability that enables us to think logically, and to learn, remember, and solve problems. In today’s puzzle series, there is 3D Stereogram Illusion is given with many random ...

3D printing was first introduced in 1984 by Charles W. Hull. The inventor developed computer-aided software that designs and creates three-dimensional objects. After more than 30 years, 3D printing ...