The Trump administration’s U.S. Environmental Protection Agency proposed on Tuesday revoking a science-based determination that pollution fueling climate change harms public health. The

President Donald Trump's administration on Tuesday proposed revoking a scientific finding that has long been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change.

In 2009, the Environmental Protection Agency declared that the rising concentrations of greenhouse gases in the atmosphere threatened public health and welfare. This “endangerment finding,” as it’s known in legal jargon,