Last year, I mapped America's "brainiest" metros, using new measures and rankings developed by Lumos Labs via their online brain-performance program, Lumosity. This year's analysis is significantly expanded, based on data from 2.4 million users. Only regions with 500 or more users were included and the full data set covers 478 core-based statistical areas, which include metropolitan and micropolitan areas. It's important to point out that the data are based on Lumosity users and likely skew toward more highly educated and affluent individuals. (The Charlottesville area ra...