Tangled Bank

[Link]: "Welcome to the 23rd issue of Tangled Bank! The wine and champagne have been chilling all day, the glasses are spotless, I have wonderful hors doerves for you to nibble on and a pianist (one of my good friends) is playing for you. So feel free to come in and help yourselves to this sumptuous smorgasbord of excellent blogged writing about science, nature and medicine."