Yet all that for three hours of work, by contrast, a far less comfortable garment several hundred years ago would have cost you ten times as much work. But these improvements have been accompanied by change so radical that we struggle to contextualize it. Like, the human population of our planet over time looks like this. Dang. Like in 1800, there were a billion human beings on this planet, and that was more than had ever been seen before. And we live more than twice as long, on average, as humans did just two centuries ago, largely due to improved health care for women in childbirth and their infants, but also thanks to antibiotics and the second agricultural revolution that began in the 1950s, the so-called Green Revolution, that saw increased use of chemical fertilizers lead to dramatically higher crop yields. Of course, these gains haven't been evenly distributed around the world, but chances are, if you're watching this, you a. survive childbirth, and b. feel reasonably confident that your children will as well.