"VATICAN CITY — Pope Francis' eagerly awaited environment encyclical will be published June 18."

"A global carbon emissions pricing system pushed by top energy companies is unlikely to be a big part of any United Nations' deal to curb global warming, some experts say, because many countries have little faith in such cross-border initiatives."

"Oil fell for the first time in three days as OPEC is seen sticking with its strategy of favoring market share over prices at a meeting this week."

"Natural-gas profits have Shell and BP, among others, calling for increased use of carbon-emissions fees ahead of a make-or-break climate summit in Paris."

"Governments will try on Monday to streamline an 89-page draft text of a U.N. deal to fight climate change due to be agreed in Paris in December, hoping to avoid the acrimony of the last failed attempt."

"The war on coal is not just political rhetoric, or a paranoid fantasy concocted by rapacious polluters. It’s real and it’s relentless. Over the past five years, it has killed a coal-fired power plant every 10 days. It has quietly transformed the U.S. electric grid and the global climate debate."

"Governments are certain to sign a global climate deal in Paris in six months' time even though most countries have yet to outline how they plan to cut emissions, the United Nations' climate chief said on Tuesday."

"The insurance company Axa has said it will remove around €500m (£355m) of coal investments from its portfolio, in a move that reflects long-term concerns in the insurance industry over climate change."

"The troubling news continues this week for the Antarctic peninsula region, which juts out from the icy continent."

"On Friday, climate change efforts across the world reached a very important milestone: the release of $5 billion to begin the work of the Green Climate Fund, which will become the main financial operator of the UN Framework Convention on Climate Change."