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Runaway Greenhouse Stage More Easily Triggered on Planets Than Once Thought

2013-07-31 20:02:00| Climate Ark Climate Change & Global Warming Newsfeed

Nature World News: The process by which a planet overheats and enters the uninhabitable phase known as the "runaway greenhouse" stage might occur much more easily than previously thought, according to new research by astronomers at the University of Washington and the University of Victoria. In the runaway greenhouse stage, a planet absorbs more solar energy than it can give off to retain equilibrium and, as a result, the world overheats and its oceans boil, filling the atmosphere with steam. When this happens, the...

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Quebec oil-train tragedy triggered oil spill that threatens water supplies

2013-07-09 17:38:00| Climate Ark Climate Change & Global Warming Newsfeed

Grist: The deadly oil-train explosion in Lac-Mégantic, Quebec, on Saturday also sparked an environmental disaster. An oil sheen has stretched more than 60 miles down a river thats used as a source of drinking water. By Tuesday morning, 13 people had been confirmed dead and some 37 were still missing after runaway train cars loaded with fracked crude from North Dakota derailed in the town and ignited. Lac-Mégantic`s fire chief said the fire is now under control, but a small area of town is still off...

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Huge and widespread volcanic eruptions triggered the end-Triassic extinction

2013-03-23 19:19:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: More than 200 million years ago, a massive extinction decimated 76 percent of marine and terrestrial species, marking the end of the Triassic period and the onset of the Jurassic. This devastating event cleared the way for dinosaurs to dominate Earth for the next 135 million years, taking over ecological niches formerly occupied by other marine and terrestrial species. It's not entirely clear what caused the end-Triassic extinction, although most scientists agree on a likely scenario: Over a relatively...

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