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PBS News Hour
How a global effort could yield solutions on climate change
In Poland, a U.N. climate conference concluded with consensus on several ways to achieve the Paris Agreement's goal of limiting global temperature increases. But with a lack of U.S. support, is the progress enough? Nat Keohane, senior vice president of the Environmental Defense Fund, joins William Brangham to discuss international transparency, renewable energy and "urgency" around climate change.
