Unstoppable Us

Yuval: I just published a book on Stoppable Us about how humans took over the world and it's good to be here with you. Yuval: Almost everything you do during your life, everything that happens to you, is the result of history - so don't feel bad if you're scared of monsters under the bed at night,. You're just repeating a behaviour that helped your ancestors to survive. How did modern humans evolve to become the dominant species on earth? What abilities did we develop which meant that we stood out from the crowd? Peter Galavan explains evolution in this week's Mysteries of Science.