Get enough dots together and your faulty eyeballs start seeing things. With random dot patterns, a simple move of the dots by a few degrees can create trippy concentric circles or wild swirls that ...

When you get a vaccine, the momentary needle prick endows your with disease-fighting antibodies and doesn’t leave a trace. But in the future, your vaccine record may be written invisibly on your skin ...

There is a key rule when mixing two patterns: Avoid combining two large, busy patterns. Combine one small pattern with one that is larger and more widely spaced.