“Do you see the pattern? Each number in the series after the first two numbers is the sum of the preceding two numbers.” That’s how I began my last column focusing on the Fibonacci sequence, which ...

Here's a hypothetical and idealized question about rabbits, first posed by Leonardo di Pisa in 1202 (Leonardo is more commonly known as Fibonacci). There's a pair of rabbits in an enormous field. At ...

An unusual arrangement of leaves in a 407-million-year-old fossilized plant is complicating scientists’ understanding of plant evolution. Most land plants living today have spiral patterns involving ...