1. CLEAN POWER PLAN
World watches as U.S. climate saga heads for court showdown
The Obama administration heads to court tomorrow to lock horns against coal-dependent companies and mostly conservative-led states that oppose the rule to cut back on the biggest source of carbon emissions in the country, the electricity sector. The Clean Power Plan alone would have a small effect on global temperatures, but environmental authorities say it has been crucial to spurring other countries to act. If it falls to legal challenges, diplomats warn, repercussions will be felt around the world.