ClimateWire: On the heels of President Obama's controversial decision to greenlight renewed oil drilling in the Arctic, the United Nations' top climate change official yesterday declared that fossil fuels have become an unwise investment.
Christiana Figueres, who leads the U.N. Framework Convention on Climate Change, avoided commenting directly on the White House move allowing Royal Dutch Shell to begin exploratory drilling in the Chukchi Sea. But she noted that oil and gas reserves must stay underground and...