## News from the world of Maths

*Plus*postcards.

In our Science fiction, science fact project we asked you which question from the frontier of physics you'd most like to see answered on *Plus*. We have just closed the poll and with nearly 20% of your vote the winning question is *Does infinity exist?*.

Happy Pi Day to you! Happy Pi Day to you! Happy 3.14159265358979323846264338327950288.... Day to you! Happy Pi Day to you!!

If you've been worrying about how to combine the imminent Olympic fever with that other great passion — maths — then salvation is about to arrive. John D Barrow, eminent cosmologist, best selling author and director of the Millennium Mathematics Project (of which *Plus* is a part), has written a book, *100 essential things you didn't know you didn't know about sport*, exploring the maths behind your favourite disciplines. And if you're near London or Cambridge you can see Barrow himself talk about some of its contents — for free!

Today is International Women's Day! *Plus* is run entirely by women who are happily disregarding maths and gender stereotypes, so we're very pleased to join in the celebrations. We've got lots of content by or about women mathematicians on *Plus* and here are some of our favourites. (And we'd like to ask all remaining dinosaurs to stop sending us emails starting "Dear Sirs"...)