Long-lived carbon dioxide warms the world for many millennia By Tim Radford

Gun the engine, and the ignition of fossil fuel produces not just working energy but heat that dissipates quickly into the atmosphere. But it also produces carbon dioxide that dissipates into the atmosphere. And in less than two months, according to new research, that pulse of carbon dioxide will have engendered more heat for the planet than the original touch …

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Increased carbon dioxide levels in air restrict plants’ ability to absorb nutrients

The rapidly rising levels of carbon dioxide in the atmosphere affect plants’ absorption of nitrogen, which is the nutrient that restricts crop growth in most terrestrial ecosystems. Researchers at the University of Gothenburg have now revealed that the concentration of nitrogen in plants’ tissue is lower in air with high levels of carbon dioxide, regardless of whether or not the …

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The methane apocalypse – Anil Ananthaswamy

They look like massive bomb craters. So far seven of these gaping chasms have been discovered in Siberia, apparently caused by pockets of methane exploding out of the melting permafrost. Has the Arctic methane time bomb begun to detonate in a more literal way than anyone imagined. The “methane time bomb” is the popular shorthand for the idea that the …

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Permafrost thaw’s runaway effect on carbon release – Tim Radford

An international team of scientists has settled one puzzle of the Arctic permafrost and confirmed one long-standing fear: the vast amounts of carbon now preserved in the frozen soils could one day all get back into the atmosphere. Since the Arctic is the fastest-warming place on the planet, such a release of greenhouse gas could only accelerate global warming and …

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Is Solving Climate Change as Simple as Sucking Carbon Out of the Air? – Tara Lohan

It sounds almost too obvious. But we may be able to stave off some of the major effects of catastrophic climate change simply by sucking out of the air the vast amounts of carbon dioxide we’ve been spewing for decades. It’s not a new idea, but it’s one that has never been economical. Until now, perhaps. Graciela Chichilnisky believes her …

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In A Bid To Put An End To The Fossil Fuel Crisis, Audi Has Made Diesel Only From Air And Water.

Luxury car maker Audi has announced that it is making synthetic diesel fuel from just water and carbon dioxide. Audi’s pilot plant, which is operated in Dresden by German start-up Sunfire, has produced its first batches of the “e-diesel” fuel earlier this month. To commemorate the potentially huge accomplishment, German Federal Minister of Education and Research Johanna Wanka put a …

Andrea Germanos – The Solution to Climate Change Right Under Our Feet

What if there were a risk-free way of helping to mitigate climate change while simultaneously addressing food and water security? A new report from the Center for Food Safety’s Cool Foods Campaign says that such an opportunity is possible, and it’s right below our feet. Soil & Carbon: Soil Solutions to Climate Problems outlines how it is possible to take atmospheric …

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Carbon Sequestration Is Not A Solution To The Climate Crisis

Burying the greenhouse gas carbon dioxide, a byproduct of burning fossil fuels, has been mooted as one geoengineering approach to ameliorating climate change. To be effective, trapping the gas in geological deposits would be for the very long term, thousands of years. Now, a team in Brazil, writing in the International Journal of Global Warming has reviewed the risk assessments …

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Permafrost holds key to release of trapped carbon – Tim Radford

Three sets of scientists in the same week have helped narrow the uncertainties about how the natural world will respond to extra carbon dioxide in the atmosphere caused by the burning of fossil fuels. Carbon locked in the frozen earth will escape gradually as the Arctic permafrost melts – but the scientists say the process could accelerate. As greenhouse gas …

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Anesthetic gases raise Earth’s temperature (a little) while you sleep

The gases used to knock out surgery patients are accumulating in the Earth’s atmosphere, where they make a small contribution to climate change, report scientists who have detected the compounds as far afield as Antarctica. Over the past decade, concentrations of the anesthetics desflurane, isoflurane and sevoflurane have been rising globally, the new study finds. Like the well-known climate warmer …