Paris climate pact enters into force, focus shifts to action

By Valerie Volcovici WASHINGTON (Reuters) - The global accord to combat climate change agreed in Paris last year officially entered into force Friday, putting pressure on nearly 200 countries to start executing plans to slash their greenhouse gas emissions. "This is a moment to celebrate," said United Nations climate chief Patricia Espinosa. "It is also a moment to look ahead with sober assessment and renewed will over the task ahead." The Paris Agreement seeks to wean the world economy off foss