Higher greenhouse-gas emissions, fewer jobs, more expensive energy and dirtier air that kills more people: researchers have begun plugging US President Donald Trump's energy and climate policies into their models, and the early results suggest far-reaching environmental, health and economic consequences. Trump, a Republican, began his second term on a promise to 'drill, baby, drill', vowing to make the United States rich again by promoting the development of oil and gas. To that end, Trump plans to roll back climate regulations, end clean-energy incentives and promote fossil fuels. It's not clear that Trump will be able to accomplish his goals. But if he does, researchers' models show that these policies are likely to have negative effects for many US residents. They also project that Trump's policies will undermine efforts to rein in global warming, affecting people around the world. Trump has vowed to roll back regulations put in place by his predecessor, Democrat Joe Biden, to...
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