Skeptics Circle #53 is up on Slicing with Occam's Razor.
Festival of the Trees #8 is up on Ginkgo Dreams.
There is a (finally!) brand new Carnival of the Mathematics
And, although there are already three other EduCarnivals doing well, there is another one coming, the Carnival of the Edublogs focusing on the use of technology in the classroom.
And I linked to a bunch of other carnivals already this week as the new editions were getting posted...
Hey, you missed Philosophia Naturalis #6 at Science and Reason! Lots of good stuff about astronomy, physics, and math.