27 NOV 15
Added a reference to a new review of biological markets written by Peter Hammerstein and myself, to appear January 4, 2016 in PhilTransB
4 NOV 15
Added a reference to a paper by Walder & Van der Heijden on BMT in mycorrhiza (in Nature Plants) to the page BM: nutrient exchange symbiosis. A comment can be found on my ScoopIt-page
25 OCT 15
Added a reference to a paper by Sanchez-Amaro & Amici on markets in primates (Animal Behaviour) to the page on Grooming in primates. If you look for my reaction to this, then please see my ScoopIt-page
For videos of the "Forbidden Circle Game", see the Vervet research page (the market experiment) and "BM: grooming in primates"