Illusions aren’t just fun to look at — they reveal how your brain really works. One famous image, which looks like both a ...

And can I just say real friends don't post pictures where they look like a million bucks in the ... next time you're in front of a camera you'll feel so much more confident. Check out my Instagram ...

we aren't ready to take in hard-to-look-at photos. For those images, they can just exist in the world until we're ready to take them in. They feel as if they appear in front of us — just like ...

This week Tugo Cheng tells us how he photographed this photo that looks like a drawing ... lines and shapes, like a black-and-white drawing. N.G.T.: How did you feel when you made this picture?