2008 An Environmental Crossroads

Lori Snyder Bennear is an environmental economist who specializes in evaluating the effectiveness of environmental regulations.
tel: (919) 613-8083 e: lori.bennear@duke.edu

Research focus: Bennear's areas of specialization are environmental and natural resource economics, applied microeconomics and empirical methods. Her research focuses on estimating the effect of different regulatory innovations on measures of facility-level environmental performance, such as pollution levels, chemical use, and technology choice.

Her recent work has focused on measuring the effectiveness of management-based regulations, which require each regulated entity to develop its own internal rules and initiates to achieve reductions in pollution, as well as the effectiveness of regulations that mandate public reporting of toxic emissions.

Research focus: Atmospheric chemistry. Regional and global modeling. Atmospheric chemical data analysis. Natural and anthropogenic impacts on the chemical composition of the atmosphere.

In a recent Science article, Kasibhatla and his co-authors reported that drought-induced wildfires during El Nino climatic cycles may be undocumented sources of greenhouse gas emissions that cannot be traced to smokestacks, vehicular emissions and other known contributors. “This suggests that the variability and intensity of El Nino may be one of the most critical components of climate regulating future carbon loss,” he says.

Research focus: Sustainability of southern forests. Science and management of soils, forests and watersheds, particularly the impact of acid atmospheric pollution on them.

William Schlesinger studies the effects of elevated CO₂ levels on the environment. His research does not reinforce the optimism of some policymakers who believe trees and soils can naturally absorb the increasing amounts of carbon dioxide produced by industrial or vehicular emissions.
tel: (919) 613-8004: e:schlesin@duke.edu

Research focus: Global environmental change, focusing on chemical changes in the environment, especially soils, that relate to changes in global climate and desertification.

Schlesinger’s research rebuts the hypothesis that trees and soils will be able to absorb ever-increasing amounts of carbon dioxide emissions in the air. Instead, he says, a better strategy would be to employ underground carbon sequestration. “It should be relatively easy to capture the CO₂ emitted from point-sources, such as Florida’s 12 coal-fired power plants, and inject it into the Earth's crust, where it can react with rock materials,” he says. “This would be easier to verify and more permanent than storage in trees and soils, which are subject to human disruptions like forest fires and cultivation. Several analyses suggest that we could use deep injection to capture a large fraction of the CO₂ emitted from electric power plants, which now account for about one-third of our nation's total emissions.”