Human evolution is really on a very slow time scale. It took thousands of years for skin color to evolve to very light and then back to dark again as people migrated up and down Earth's latitudes.Originally Posted by Disinfo Agent
People come in various sizes from Pygmy tribes to Zulus, from very fat Eskimos to very thin Japanese. I doubt one could conclude we are getting taller as a race based on current evidence. A visit to a local museum though will show much smaller clothes were worn by the pioneers in America in the 1700 and 1800s.
The question is whether or not we are better fed or genetically larger. I don't know if there is an answer to that question if you are only looking at a small population segment. As humans, you'd have to look at an average like one does with global temperature.