"General Relativity!"

"What is it, private?" replied the General.

Actually, GR (as those in the biz call it) is not a person at all, but the awesome theory of how gravity works. David Paganin (aka The General) fills us in on what it all means.

"I've invented a new number! Pie!" Mathematicians have been coming up with crazy stuff for years, but are they actually crazy? Films like A Beautiful Mind lead us to expect they are. We look at some famous (real) maths guys.

Quiz. Go figure.