Well, no-one knows exactly, but using stats you can make a good guess. This article tells you how and has an interactive life expectancy calculator. Do you dare to find out?

Election issues

How to keep inflation down

This issue's teacher package brings together all Plus articles on group theory, exploring its applications and recent breakthroughs, and giving explicit definitions and examples of groups. It also has some handy links to related problems on our sister site NRICH.

Engineers often consider mathematics a necessary evil rather than a pursuit in itself. The author of An imaginary tale, Paul J. Nahin, is therefore a rare find.

We're in a US election year, and as is usual at such times there is some discussion about the fairness of the voting system.

If you ever have been (or wanted to be) involved in a school or office council which has to be elected by popular vote, you have a fair idea of the sort of considerations that have to be made.

Charles Lutwidge Dodgson sat in the bows of a rowing boat and heaved on the oars in time with another young man who sat in front of him.

With Einstein's publication of The Foundation of the General Theory of Relativity in 1916 our view of the nature of the Universe was forever altered.

If you were to seek out books that attempt to popularise maths among the innumerati, you would notice that most give a quick nod to the golden ratio.

Do five suffice?