As the inimitable Yogi Berra once said, “It’s tough to make predictions, especially about the future.” And indeed it is. Some guesswork is always involved and surprises crop up that change the course of events. Yet, it is probably clear to most of us that the world is likely to become an increasingly and unpleasantly crowded place as we move along through the 21st century. About 7.5 billion people share the earth with us right now, in 2017. That’s around twice the number that was here in 1970, 47 years ago. Roughly every 13 years since 1960, about a billion more people have come onboard, and this pattern continues. And we didn’t even arrive at our first billion until 1804, after existing for 75,000 years or so. The more folks we have, the more we’re going to get. It can’t go on and on like that forever. We are […]