If your view of the world comes from watching the news and reading newspapers, you could be forgiven for lying awake at night worrying about the future. Apparently, rising violence and population rates mean humans are both killing each other in ever larger numbers and being born at rates the world’s resources can’t sustain. To make matters worse, all the wealth is concentrated on a handful of people in the world’s richest countries. People in low-income countries live in poverty while the West gets richer. Depressing, isn’t it?