This article examines the question of how to interpret a relationship between income and carbon emissions in a country (the environmental kuznets curve [EKC] for carbon). A very simple and graphical structural model of an EKC is developed, and the problems of applying the concept to carbon are discussed.

10th climate change meet shows how weak the will to combat global warming has become

Be careful how land use and land cover changes

Nearly 50% of terrigenous materials delivered to the world's oceans are delivered through just twenty-one major river systems. These river-dominated coastal margins (including estuarine and shelf ecosystems) are thus important both to the regional enhancement of productivity and to the global flux of C that is observed in land-margin ecosystems. The tropical regions of the biosphere are the most biogeochemically active coastal regions and represent potentially important sinks of C in the biosphere.