pAh, puberty. A time for raging hormones, growing independence and being stupid. Okay, not every teenager gets stupid. But they actually do learn less. And in a study published in the journal Science [see Hui Shen et al, http://bit.ly/dbeLY6 ], researchers describe the cellular and molecular changes that drive this puberty-associated desmartification. a href=http://www.scientificamerican.com/podcast/episode.cfm?id=puberty-a-time-for-less-learning-10-03-19[More]/a