On Hens, Eggs, Temperature and CO2
The original version of this blog – written by Giacomo Grassi, with contributions from Stefano Caserini, Giorgio Vacchiano, Gianni Comoretto, Claudio della Volpe, and Mario Grosso - appeared in the Italian climate website Climalteranti. The version here has been checked and further enriched by Pierre Friedlingstein (Global Carbon Project).
Source: skepticalscience.com