Depending on how recent you want... I recalled hearing that a major evolutionary shift in the past few thousand years was lactose tolerance; a quick Google search turned up this: http://www.nytimes.com/2006/12/10/science/10cnd-evolve.html?_r=0
Also, maybe a selection for particular types of earwax, which could be related to body odor: http://blogs.discovermagazine.com/gnxp/2010/10/east-asians-dry-earwax-and-adaptation/#.UTGlU9H2QgQ
Thanks, Maia, but my interest in this is from the perspective of an altruist who wants to know whether humanity will improve or disintegrate. I am interested in things that might create selection pressures that affect things like ethical behavior and competence. It seems like you've read about this subject so I'm wondering if you know of any research on micro-evolution affecting traits that are important to humanity having a good future.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.