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Long-Term Temperature Change

The blue line shows estimates of Arctic temperatures over the past 2,000 years based on proxy records from lake sediments, ice cores and tree rings. A 2,000-year climate simulation with the National Center for Atmospheric Research's climate system model showed a similar temperature decrease. The red line shows Arctic temperatures based on actual observations, beginning in 1865.


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Group Advocates Geoengineering Solutions to Warming
Article | The Copenhagen Consensus Center, a controversial Denmark-based think tank focused on the environment and international development, proposed Thursday that world leaders should focus on a geoengineered solution to climate change in the near term rather than mandating cuts in greenhouse gas emissions.
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Threat of global warming sparks U.S. interest in geoengineering
Article | It's come to this: Climate-conscious policymakers are beginning to contemplate the possibility of playing God with the weather in the hope of slowing global warming.

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