I enjoyed the (fairly long) article Everything You Always Wanted To Know About Sleep (But Were Too Afraid To Ask). The author works in the Seven Deadly Sins, the 2004 presidential election, and Chernobyl, among other things, with current scientific research and understanding of sleep. There’s also some really good hints on how to optimize your sleeping patterns. (The guy is apparently a biologist working in sleep research.)
I especially enjoyed this quotation:
Waking a person unnecessarily should not be considered a capital crime. For a first offense, that is.
Possibly this will save my Saturday mornings from Rochelle’s depredations. (I am an owl, Rochelle is a lark.)
Anyway, it’s longish article, but some sections with considerable scientific detail are easily skipped, and overall pretty interesting.