News roundup: Half the world is now middle class or wealthier … Rare donation by Exxon to fight climate change marks break with fellow oil giants, Trump … Bond market’s $1T deficit spiral has no political fix

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    Middle-class majority: In a first for the world, more than half the global population is now middle class or wealthier, writes Brookings. “For the first time since agriculture-based civilization beg…


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