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 ...

Julia Guerra is a lifestyle journalist with almost a decade's experience reporting on beauty, fashion, health, and more. You can find her bylines across more than 20 publications. Color-coordinating ...

Scientists are moving closer to answering some age-old questions. How did the leopard get its spots? How did the zebra get its stripes? The answer may be a gene called Agouti, which the scientists ...