| http://www.w3.org/ns/prov#value | - Two-decade-old U.N. climate talks have so far failed in their goal of reducing the carbon dioxide and other greenhouse gas emissions that a vast majority of scientists says are warming the planet.Last December, a U.N. climate conference in Doha, Qatar, agreed to extend the Kyoto Protocol, a treaty that limits the greenhouse gas output of some rich countries, and affirmed a previous decision to ado
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