But in the last 200 years, all of that has changed. In just a fraction of the time that our species has clocked on this planet, billions of us are suddenly rich, well nourished, clean, safe, smart, healthy, and occasionally even beautiful. Where 84% of the world’s population still lived in extreme poverty in 1820, by 1981 that percentage had dropped to 44%, and now, just a few decades later, it is under 10%.1
