## Articles

China has recently revoked its one-child policy. What better occasion to explore the mathematics of population growth with a surprising example.

It would be foolish to ignore evidence. Luckily Bayes' theorem shows us how to take it in into account.

Find out why leap years exist, why you have to wait 400 years for your birthday pattern to repeat, and why there are so many Fridays falling on a 13th.

The fuzziness of the quantum realm could arise from mathematical restrictions on what can ever be known.

Find out how scientists, from physicists to geneticists, measure their confidence in their results.

A new framework for the laws underlying reality could explain why nature obeys quantum rules, the origin of time’s arrow, and the power of quantum computing.