ClimateWire: The “magna carta” of U.S. environmental law is having growing pains as federal agencies grapple with how it will incorporate climate change and whether it will invite lawsuits that could send streams of climate-related issues into the courts. The National Environmental Policy Act (NEPA) is the ambitious statute requiring that federal agencies publicly evaluate the environmental impacts of their decisions — from building a highway to permitting wetland development. It also requires …