Professor Tim Gowers examines infinity to see if it can be written as a number.This episode looks at the story of infinity. Mathematicians have discovered there are infinitely many infinities each one infinitely bigger than the last. And if the universe goes on forever the consequences are even more bizarre. In an infinite universe there are infinitely many copies of the Earth and infinitely many copies of you. Older than time bigger than the universe and stranger than fiction.   ... >>