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Delegates from nearly 200 countries are in Morocco this week to work out how to implement the Paris Climate Agreement. That's the historic accord under which countries including the U.S. pledged to limit global temperature rise to 2 degrees Celsius above pre-industrial levels, and to help poorer countries transition away from fossil fuel.
But, with the election of Donald Trump last week, some environmentalists are worried the U.S. will backtrack.
This segment aired on November 16, 2016.