"Anyone who thought that Pope Francis was going to issue his climate change manifesto, and then recede quietly into the background on the issue was sorely mistaken."

"Negotiators working toward the Paris talks debate whether strict requirements will endanger cooperation, particularly from the U.S."

"The United States and four other nations that border the Arctic Ocean pledged on Thursday to prohibit commercial fishing in the international waters of the Arctic until more scientific research could be done on how warming seas and melting ice are affecting fish stocks."

The year 2014, the latest for which complete global data are available, was the hottest ever recorded on land and on sea. The signature lower-atmosphere warming indicates the cause is manmade greenhouse emissions.

"Consider the albatross. A bird that mates for life and flies over 6,000 miles for food, the albatross has seen profound population declines over the past several decades. It appears now as though a harbinger for its own demise."

"This week, warnings of an impending 'mini ice age,' set to hit in the 2030s, have been circulating in the media. It’s a story that has caused shivers among the public, but there’s one problem: Climate scientists aren’t buying it."

"The nuclear agreement with Iran opens the way for a flood of new oil eventually to pour onto world markets, setting up a potential windfall for energy giants. But it will take a year or more before Iran can increase production significantly, delaying any impact on oil prices."

"Governments should treat climate change as seriously as threats to national security or public health, partly by focusing more on the worst scenarios of rising temperatures, an international report said on Monday."

"VIENNA — Iran and a group of six nations led by the United States have agreed to a historic accord to significantly limit Tehran’s nuclear ability for more than a decade in return for lifting international oil and financial sanctions against Iran, a senior Western diplomat involved in the negotiations said on Tuesday."

"Oil extended its decline after its biggest weekly drop since March as investors weighed the prospects of Iran increasing crude exports in an oversupplied market."