David Rejeski

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An ecological threshold is the point at which there is an abrupt change in an ecosystem quality, property or phenomenon, or where small changes in an environmental driver produce large responses in the ecosystem. Analysis of thresholds is complicated by nonlinear dynamics and by multiple factor controls that operate at diverse spatial and temporal scales.(More)
To document the marketing and distribution of nano-enabled products into the commercial marketplace, the Woodrow Wilson International Center for Scholars and the Project on Emerging Nanotechnologies created the Nanotechnology Consumer Products Inventory (CPI) in 2005. The objective of this present work is to redevelop the CPI by leading a research effort to(More)
the desert or near the sea, where giant ponds of synthetic microalgae pump out biofuels. Imagine seeds coated with engineered Escherichia coli bacteria that induce lateral root growth to reduce soil erosion, the goal of the Project Auxin team in the iGEM competition (see http://2011.igem.org). These may sound like amazing innovations that have no downside,(More)
research and development by public and private sectors has risen to more than US$18 billion annually and nanotechnology has passed from a scientific curiosity to a market reality, with hundreds of substances and nanotech-based products now commercially available. Despite the need for evidence-driven oversight of the products of nanotechnology, very little(More)
The Internet-led digital economy is changing both the production and consumption patterns at the global scale. Although great potential exists to harness information technology in general and the Internet in particular and improve the environment, possible negative impacts of e-commerce on the environment should also be considered and dealt with. In this(More)