Tech firms are going back to school. Find out what middle-school kids have got to do with populism—and why "learning to learn" will be key to many people's futures, whatever their age.br br Click here to subscribe to The Economist on YouTube: br THE AGENDA explores the defining questions of our time and seeks out the stories, solutions and the personalities who might just hold the answers. Discover the mould-breakers experimenting with new ways to approach some of the modern world's most fundamental issues; find out what happens when bold ideas and real life collide, and meet the leaders whose thoughts and actions are themselves helping to shape the agenda. br br Series One of The Agenda: People Power gets to grips with the rise of populism and what lies behind it.