Though generations of schoolchildren have cursed arithmetic, the world was a much more inconvenient place without it. Before the advent of modern arithmetic in the 13th century, basic calculations ...

The Fibonacci sequence is a mathematical concept that has been around for centuries. Named after Italian mathematician Leonardo of Pisa, also known as Fibonacci, the sequence is derived by adding the ...

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 ...