Donald Trump's election as U.S. president muddies the outlook for efforts to cut greenhouse gases and could mean U.S. emissions stay flat until 2030, compared with deep cuts planned by President Barack Obama, scientists said on Thursday.
Republican Trump, who has called climate change a hoax and is expected to favor the coal and oil industries, opposes last year's Paris Agreement by almost 200 nations to combat global warming.
In the past year "national climate policies have made little progress, and the road ahead looks even less clear after the results of the U.S. presidential elections," three European scientific groups said in a report of global trends.