A carbon tax was the concept behind President Obama’s cap and trade proposal that was ultimately abandoned early in his first term. In Canada, meanwhile, Environment Minister Catherine McKenna announced that the country will set a price on carbon emissions by the end of this year.The Obama White House today released the final guidance for federal agencies regarding their National Environmental Policy Act (NEPA) reviews. NEPA is designed to promote consideration of potential effects on the environment that would result from such agencies’ proposed actions and regulations. It is also intended to provide the public and decision makers with useful information concerning alternatives and mitigation measures to improve the environmental outcomes...