I think we'll continue to become a little taller than our recent ancestors on average. Our brains grew tremendously compared to our closest relatives in the animal kingdom, but I think they have been shrinking on average over the last 5000 years. I think we are generally less strong as a species than we used to be, and considering more and more people sit around cubicles most of the day, I'm sure we will continue to become physically weaker on average. I think as the population continues to grow and food sources get scarce, we may see digestive changes that allow us to process certain types of foods that we had trouble with or couldn't digest in the past--just as lactose tolerance in adulthood wasn't prevalent until about 3000 years ago. Now, most adults can digest milk, even though some people still have lactose problems. Culturally--we will be able to multi-task more and more--though I don't know if that's a good thing.
at 4:58 PM on Mar. 29, 2011