Sleep deprivation making you feel jumpy? It's not in your head. Human cortical excitability increases with time awake. [Abstract and link to full paper.]
posted by stoneweaver on Jul 3, 2012 - 12 comments

Secret of AA: After 75 Years, We Don’t Know How It Works. "There is evidence that a big part of AA’s effectiveness may have nothing to do with the actual (12) steps. It may derive from something more fundamental: the power of the group. The importance of this is reflected by the fact that the more deeply AA members commit to the group, rather than just the program, the better they fare." [more inside]
posted by netbros on Jul 6, 2010 - 145 comments

Why is your brain wrinkled?
posted by Brandon Blatcher on Aug 6, 2009 - 66 comments

Cool high-school science experiment: Mapping The Homunculus. The 15 year old in me wonders why nipples and other naughty bits aren't mentioned, though. Bet they'd be really big!!!
posted by luser on Nov 27, 2001 - 8 comments