BBC News has an intriuging list of 100 things we didn't know this time last year. My personal favorties:
9. Some pigeons follow roads and turn off at motorway junctions to navigate their way round.
31. Herrings break wind to communicate and keep the school together.
50. A tribe living in a remote part of Brazil's Amazon rainforest has no words for numbers beyond two. The Piraha use "one" to mean one or roughly one, two means two, while any larger number is just "many".
75. Freak conditions above Everest can cause the sky to "fall in". An analysis of weather patterns in May 1996, by University of Toronto researchers, said eight people died when the stratosphere sank to the level of the summit.
81. When people are in love, weird things happen. Men get more female hormones, and women get more male. Scientist Donatella Marazziti says it's as if nature wants to eliminate what can be different in men and women, perhaps to help the mating process.
Hat tip: kottke