John D. Barrow is continuing his public lecture tour to promote his new Book of Universes. You can catch him at Gresham College in London on March 1st (admission free) and at the Bath Literary Festival on February 27th (admission £7, concession £6).
If you're in London on Tuesday the 15th of February, then why not take a journey into other worlds with John D. Barrow at the Royal Institution? Barrow will tell a story that revolves around a single extraordinary fact: that Albert Einstein's famous theory of relativity describes a series of entire universes.
Here's a fact: take the year you were born in (only the last two digits, as in '85), add your age and then (probably) add 1. The answer is ... 111! This seems to have been making the rounds lately. Some people marvel at the fact that the answer is always 111 no matter how old you are and others think that 2011 is the only year in which this will work. Looks like mathematical magic!