Grist: A temporary halt to the federal governments plan to cut electric power plant emissions has caused carbon prices in the Northeasts only cap-and-trade program to plummet, according to the U.S. Department of Energy.
Carbon prices in the Regional Greenhouse Gas Initiative, or RGGI, have fallen 40 percent since the Supreme Courts decision in February to stay the Clean Power Plan -- from their peak at $7.50 per metric ton of carbon dioxide in December to $4.53 per ton in June.
RGGI is Americas...