In climate news, The Wall Street Journal reports the Trump administration is planning this week to formally end the Obama-era scientific determination that greenhouse gas emissions endanger public health. The finding is the basis of a 2009 rule that allowed the Environmental Protection Agency to set limits on greenhouse gas pollution from cars, power plants and other sources. It’s likely Trump’s efforts to roll back the finding will face years of legal challenges, but its repeal will immediately eliminate climate standards for passenger cars and commercial trucks.