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1 Climate Change Science Compendium, United Nations Environment Program, 2009, Systems Management chapter, p. 50-1.
2 Preliminary evaluation of the effects of carbonized chicken manure..., Seth O. Tagoe, African Journal of Agricultural Research, , Vol. 3 (11), pp. 759-774, November, 2008.
3 Review of the pyrolysis platform for coproducing bio-oil and biochar, David A. Laird et al, Biofuels, Bioproducts and Biorefining, 3:547-562 (2009).
4 Fire-Derived Charcoal Causes Loss of Forest Humus, David A. Wardle et al, Science 2 May 2008: Vol. 320. no. 5876, p. 629 (also see comments).
5 Impacts of sixteen different biochars on soil greenhouse gas production, KA Spokas & DC Reicosky, Annals of Environmental Science, 2009, Vol 3, 179-193.
Terry Devitt, editor; Steve Furay, project assistant; S.V. Medaris, designer/illustrator; David Tenenbaum, feature writer; Amy Toburen, content development executive