Quantum mechanics is one of the most powerful and successful theories in all of science, but what it tells about the fundamental building blocks of matter can be very baffling. Physicists and chemists have had to get used to this strangeness, but biologists have so far got away without having to worry too much about it. However, times are changing. There is now solid evidence that many fundamental processes inside living cells rely on the weird rules of the quantum world, from enzymes to photosynthesis to the way our sense of smell works. There is even the hint that some birds navigate during migration thanks to quantum entanglement. This talk introduces the exciting new field of Quantum Biology by one of its foremost practitioners.