TNS Three years after forging the Paris climate agreement, world leaders are meeting again to decide how to turn emissions-cutting pledges into action.
But as talks begin this week in Katowice, Poland, a clash between climate science and global politics threatens the ability of nearly 200 countries to come together to reduce greenhouse gas emissions.
At the same time scientists are issuing increasingly dire warnings of intensifying climate change and the perils of inaction, President Donald Trump and other world leaders are pursuing nationalist and fossil-fuel friendly policies that make global warming worse.
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