I apologize for never sending you a reference list for “micro energy,” it slipped my mind until I read this article. We should plan to talk when I get to Beijing in late Sept. The digesters are a great option and have been heavily promoted throughout rural China. I did, however, recently receive comments from a colleague working in Yunnan (near TNC) who thinks the current model of dissemination is not effective. A good number of the digesters are poorly built and lay unused — clearly the adoption and trade-off questions need to be more carefully examined.

Jimmy