This is the time when everyone is talking about the Daylight Saving Time and I always feel pressure to blog about it from a chronobiological perspective. And I always resist. As I will this year. So, here are a couple of related links instead:
Larry provides a brief history of time zones and the Dalyight Saving Time (and a cool map that goes with it).
Dave finds some data that the DST does not actually save any energy.
Among numerous newspaper articles, I thought this Boston Globe one gives the most accurate summary of what DST does to our circadian rhythms and sleep. It explains why it takes us several days to adjust to DST when our clocks are normally capable of phase-shifting one hour in one day. Why are there 10% more car accidents today than on any other day of the year? However, it does not mention that people with circadian disorders such as SAD and Bipolar Disorder suffer more due to DST (the SAD patients throughout the winter – today is the happy day of final release from the winter blues; the BP patients suffer most on the two days of the year at which the shifts happen).