The Economist has a good review of the state of play with cognitive enhancing drugs - the so-called "memory pills".

ScienCentral has a couple of interesting articles in their latest issue: one about the consequences for middle school students of apparently all too common sleep deprivation; another on the development of a simple listening test that seems to predict with great accuracy who will do well on selective serotonin reuptake inhibitor (SSRI) antidepressants, the most popularly prescribed medications for treating depression in the United States. Apparently nearly half of all patients being treated for depression don't respond to SSRI medications, which doctors prescribe to patients 80 percent of the time