Since humans sharpened the first stick and lit the first fire, we have been on an innovation spree, constantly developing new tools and materials to solve our problems. But material scientist Ainissa Ramirez says innovation is a two-way street. Drawing on stories about eight key inventions, she tells Rufus how our creations can change us in surprising ways.

Cutting-edge science, music and art, powerful technology, plentiful food. It’s no wonder we sing the praises of civilization. But do we really have it so good? Christopher Ryan says it’s time for a rethink. He tells Rufus that people in non-civilized societies tend to be healthier, happier, and more fulfilled. What can we learn from the life we left behind?