What’s happened to the forests of the former Roman Empire? This and other mysteries are probed in Quandaries of Forest Area, Volume, Biomass, and Carbon Explored with the Forest Identity, a sequel by Paul Waggoner and Jesse Ausubel to our 2006 PNAS paper Returning Forests Analyzed with the Forest Identity.

Our paper “Towards Green Mobility” was discussed recently in the New York Time’s Dot Earth blog.