News roundup: U.S. economic growth revised down to 2.4% pace in fourth quarter … Researchers forecast natural gas vehicles will see rapid rise globally through 2023 … Experts say Mardi Gras beads from China contain toxic metals and chemicals

    Insider

    Upon further review: The government has cut its estimate of fourth-quarter growth because consumer spending, government spending and exports were weaker than previously estimated. The nation's gross d…


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