Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Calcea Johnson and Ne'Kiya Jackson, who surprised the math world when they produced innovative solutions to a 2,000-year-old puzzle, wowed the math world again when they presented several new ways of ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The Ishango bone, from Africa's Congo region, has dozens of parallel notches cut into its surface ...