We had a bit of a delay in the posting of TGS #39, but don’t forget that this means that the deadline for the 40th edition of The Giant’s Shoulders, the history of science blog carnival, is coming up quickly!  You have 9 days to submit your clever insights into the history of science.  This month’s edition will be hosted by Gurdur at Stranger in an Even Stranger Land; submissions can be submitted to the blog carnival website or directly to the host blog, as usual.