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The Earth Hour, that is!
March 29th is Earth Hour Day. From 8pm to 8pm in your local time zone, you are to switch off the lights and stuff.
A number of astronomers out for an early evening look at the stars will thank you, and the Earth will thank you.
Here's his latest.
The second installment of The Synapse, the neuroscience carnival, will be held right here this coming Sunday, on July 9th.