‘World leaders must now respond to an “unequivocal” message from climate scientists and act with policies to cut greenhouse gas emissions, the United Nations secretary-general urged on Friday.’

via IPCC climate report: human impact is ‘unequivocal’ | Environment | theguardian.com.

‘STOCKHOLM — The world’s top climate scientists on Friday formally embraced an upper limit on greenhouse gases for the first time, establishing a target level at which humanity must stop spewing them into the atmosphere or face irreversible climatic changes.’

via U.N. Climate Panel Endorses Ceiling on Global Emissions – NYTimes.com.

‘Fifty of the 500 largest publicly traded companies in the world are responsible for nearly three quarters of the group’s greenhouse gas emissions, a report by CDP said Thursday.’

via Top 50 polluters produce three quarters of greenhouse gases: report – Energy Ticker – MarketWatch.

‘While climate scientists fret over the melting of Greenland’s ice sheet, a geographer using NASA data made it disappear, revealing a canyon as long as Arizona’s Grand Canyon, buried a mile below the ice.’

via Greenland ice sheet secret revealed: a chasm rivaling the Grand Canyon – latimes.com.

‘Humanity has pushed the world’s climate system to the brink, leaving itself only scant time to act, the head of the UN’s group of climate scientists said on Monday.’

via Climate at five minutes to midnight: IPCC head – Yahoo! News.

‘US Secretary of State John Kerry said Monday the evidence for climate change was beyond dispute but it was not too late for international action to prevent its worst impacts.’

via Climate science alarming, irrefutable: Kerry – Yahoo! News.

‘SACRAMENTO — A coalition of more than 100 environmental and political activist groups is denouncing oil fracking legislation as too weak and calling on Gov. Jerry Brown to order an immediate halt to the controversial drilling practice.’

via Coalition asks Gov. Jerry Brown to halt fracking in California – latimes.com.

‘The Canadian group is part of a debate about geoengineering – deliberate and sometimes sci-fi-like interventions designed to slow climate change. A U.N. panel of climate scientists says carbon dioxide and other gases are causing global temperatures to rise and change our climate and will lead to more heat waves, droughts, floods and rising seas. Geoengineers have proposed everything from brightening clouds to reflect more sunlight and heat back into space to – as in the case of the Haida – encouraging the oceans to soak up more carbon dioxide.’

via Special Report: Experimental climate fixes stir hopes, fears, lawyers | Reuters.

‘PORTAGE GLACIER, Alaska — As she marveled at the site of a shrinking Alaska glacier, the newly installed leader of the Environmental Protection Agency said Monday that the president told her that fighting climate change should be her primary focus.’

via EPA chief warns against climate change on visit to Alaska glacier | McClatchy.

‘WASHINGTON — The Interior Department has warned that the proposed Keystone XL pipeline could have long-term, damaging effects on wildlife near its route, contradicting the State Department’s March draft environmental assessment, which concluded the project would have only a temporary, indirect impact.’

via Keystone XL project could harm wildlife, Interior Department says – latimes.com.