Beautiful Sketches That Turn into 3-D Illusions on the Page

Some of the most compelling optical illusions are often the simplest. Case in point: the drawings of Japanese artist Nagai Hideyuki. With little more than a couple of sketchbooks, some pencils, and a little perspective, Hideyuki's 2D drawings turn into a series of surreal, three-dimensional weirdfests. » 6/26/12 3:00pm 6/26/12 3:00pm

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The web's best optical illusion videos...and how they trick your brain

The human brain is one of the most remarkable things on this planet...but that doesn't mean it can't make mistakes, particularly when it comes to how we see the world. Here are five mind-blowing optical illusions and how they work. » 11/14/10 7:05pm 11/14/10 7:05pm