Urban Dwellers Drive Massive Deforestation Locally and Abroad (WK-intern) - Cities' sustainability efforts may be undermined by urban destruction of forested carbon sinks. Washington, D.C.-----Urban centers lie at the root of an important-----and often neglected-----source of emissions: deforestation. According to Senior Researcher Tom Prugh in Can a City Be Sustainable?, the latest edition of the annual State of the World series from the Worldwatch Institute, deforestation caused by growing urban consumption is contributing to massive emissions globally, despite increasing sustainability efforts locally (www.worldwatch.org). Tropical deforestation accounts for an estimated 3 billion tons of carbon dioxide per year-----equivalent to the emissions of some 600