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Tag: co2
MIT researchers identify viable anode material for molten oxide electrolysis for lower CO2 steel production
2013-05-12 15:30:13| Green Car Congress
Tags: material
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Experts: CO2 record illustrates 'scary' trend
2013-05-11 23:17:00| Climate Ark Climate Change & Global Warming Newsfeed
Associated Press: The old saying that ''what goes up must come down'' doesn't apply to carbon dioxide pollution in the air, which just hit an unnerving milestone. The chief greenhouse gas was measured Thursday at 400 parts per million in Hawaii, a monitoring site that sets the world's benchmark. It's a symbolic mark that scientists and environmentalists have been anticipating for years. While this week's number has garnered all sorts of attention, it is just a daily reading in the month when the chief greenhouse...
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Ice-free arctic in Pliocene, last time CO2 levels above 400 ppm
2013-05-11 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
ClimateWire: Scientists trying to determine how the Earth might change as temperatures rise often look back in time to a period around 3.6 million years ago called the middle Pliocene, when concentrations of carbon dioxide ranged from about 380 to 450 parts per million. (Today they are nearing 400.) A study published yesterday in the journal Science analyzed the longest land-based sediment core ever taken in the Arctic and found that during this period, from 3.6 million to 2.2 million years ago, the area around...
CO2 levels in atmosphere hit historic high
2013-05-11 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Australian Broadcasting Corporation: Global greenhouse gases in the atmosphere have reached an ominous milestone that's unprecedented in recorded human history. At the Mauna Loa observatory in Hawaii, the daily reading of carbon concentrations has now reached a level that hasn't been seen in more than 3 million years: CO2 levels in the atmosphere have hit 400 parts per million. The last time it reached a level like this, temperatures rose from between three and four degrees and sea levels were between five and 40 metres higher...
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hit
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historic
Call for action over CO2 levels
2013-05-11 09:52:00| Climate Ark Climate Change & Global Warming Newsfeed
BBC: Scientists are calling on world leaders to take action on climate change after carbon dioxide levels in the atmosphere broke through a symbolic threshold. Daily CO2 readings at a US government agency lab on Hawaii have topped 400 parts per million for the first time. Sir Brian Hoskins, the head of climate change at the UK-based Royal Society, said the figure should "jolt governments into action". China and the US have made a commitment to co-operate on clean technology. But BBC environment...
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