It’s Wednesday, so time for a round-up of the past week’s (mostly) science-related blog carnivals. A few of the “usual suspects” are taking the week off for the holidays, but there’s still plenty for you to work with:

Carnival of Mathematics #23: Haiku Edition

Circus of the Spineless #28

Festival of the Trees, #19

Friday Ark #171

Grand Rounds

I and The Bird #65

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