Add Yahoo as a preferred source to see more of our stories on Google. A variation of a puzzle called the “pick-up sticks problem” asks the following question: If I have some number of sticks with ...

As their results began to crystallize, at first they didn’t notice the striking patterns emerging. But a colleague who reviewed their work spotted the famed Fibonacci numbers—a list whose entries have ...

Pine cones. Stock-market quotations. Sunflowers. Classical architecture. Reproduction of bees. Roman poetry. What do they have in common? In one way or another, these and many more creations of nature ...