Why Are We Getting Smarter

For many decades now we’ve been getting smarter. All across the planet average IQ results have been rising… by about 3 points every ten years. It’s called the Flynn Effect and it’s changing our societies. So what is it? What causes it? And what could be the consequences if — as seems possible — it goes into reverse. (Image : Woman and man standing back to back with think bubbles. Copyright - Racorn/Shutterstock)