White House considering nearly doubling Obama's climate pledge

WASHINGTON (BLOOMBERG) - The White House is considering a pledge to cut US greenhouse-gas emissions by 50 per cent or more by the end of the decade, according to people familiar with the deliberations, a target that would nearly double the country's previous commitment and require dramatic changes in the power, transportation

"Countries around the world are looking to see what the US is going to do with this and will it come with something that's both ambitious and credible,"

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