New York Times: The Supreme Court on Monday blocked one of the Obama administrations most ambitious environmental initiatives, one meant to limit emissions of mercury and other toxic pollutants from coal-fired power plants. Justice Antonin Scalia wrote the majority opinion in the 5-to-4 decision, joined by the courts more conservative members. Industry groups and some 20 states challenged the Environmental Protection Agencys decision to regulate the emissions, saying the agency had failed to take into account...