The Synapse #8 is up on Mind Hacks.
Carnival of the Godless #50 is up on Salto Sobrius.
More like this
Tangled Bank #58 is up at Salto Sobrius.
There are some recent carnivals of note that I should mention:
*Skeptics' Circle 44 at Salto sobrius.
Tangled Bank is up on Salto Sobrius.
The 44th Skeptics' Circle is now up on Salto sobrius.