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The Ebola epidemic is paradoxical: it is out of control yet readily controllable. The key to epidemic control is rapid diagnosis, isolation, and treatment of infected individuals. This approach was used in past Ebola outbreaks through contact tracing, in which anyone exposed to a person with Ebola was monitored, tested if they developed symptoms, and, [...]

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Enroll here.

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The world faces an unprecedented challenge: to change the high-carbon energy DNA of the global economy in the next three decades to low carbon. This requires directed technological change on a historic scale. It could well fail, and with failure will come a planet wrecked by climate change. At Tuesday’s UN climate summit, nations began [...]

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Sustainable development is the central drama of our time. In many ways, humanity has squandered the time it once had to adjust to environmental realities. Now our backs are up against the wall. We are living in history, and our generation’s history is the threat of unprecedented, global-scale environmental catastrophe. The starting point is our [...]

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Earth Institute director Jeffrey Sachs and the Quakers’ Michael Shank call on Obama to stop the airstrikes—and stop supporting anti-Assad rebels. Too many times in recent history the United States has responded militarily to provocations and threats in ways that have resulted in spiraling war and violence at great long-term cost to the American people. [...]

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NEW YORK – Though the world’s eyes now are on Scotland’s referendum on independence from the United Kingdom, Scotland is not alone in seeking to redraw national boundaries. There are independence movements in many other parts of the world; indeed, 39 new states have joined the United Nations since 1980. Many more aspirants are waiting [...]

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