Frozen pizza did more for people than the washing machine!

In a fascinating new book, the Financial Times's economics expert Tim Harford chooses his favourite inventions that changed our world -- and many of them will surprise you. Just imagine, for a moment, the end of civilisation. Perhaps it was swine flu or nuclear war, or maybe even killer robots. And now imagine that you -- lucky you -- are one of the few survivors. Surrounded by the wreckage of modernity, without access to the lifeblood of modern technology, where do you start again?