President Trump on Thursday announced he was erasing the scientific finding that climate change endangers human health and the environment, ending the federal government’s legal authority to control the pollution that is dangerously heating the planet. The action is a key step in removing limits on carbon dioxide, methane and four other greenhouse gases that scientists say are supercharging heat waves, droughts, wildfires and other extreme weather. … Gov. Gavin Newsom of California promised a court challenge. “If this reckless decision survives legal challenges, it will lead to more deadly wildfires, more extreme heat deaths, more climate-driven floods and droughts, and greater threats to communities nationwide,” he said. 

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