An icon in the shape of a lightning bolt. Impact Link Danish artist Carl Krull, who is based in Copenhagen, creates mind-bending drawings that look three-dimensional. "I know I draw in an almost ...

Archaeologists found three new drawings from tens of thousands of years ago in a Spanish cave. They used a visual technique called stereoscopic photography to see the cave art like never before. The ...

When it comes to a great optical illusion we always take the bait, because we can’t help but be lured in by a talented artist with a cool hook. That’s why we like to cast a wide net over the Internet: ...