In waiting rooms, therapists’ offices, community centers, and kitchen tables across America, a once child-centered activity ...

Gabe Coeli of Portland, Ore., is devotee of zen meditation. But in the middle of a busy work day, he often takes a shortcut to mindfulness and stress relief by doing a little coloring. His assistant ...

Those of us who grew up coloring remember the cardinal rule: stay inside the lines. But those who pick up the Patterns of the Universe coloring book have to stay in the sines (and cosines and tangents ...

A detail of the Mandelbrot set, a fractal named after Benoit Mandelbrot, the French mathematician who investigated it in the 1970s. If you were to zoom in at any point on the intricate, wiggly line, ...