CO2 Turned Into Stone In Iceland In Climate Change Breakthrough


Carbon dioxide has been pumped underground and turned rapidly into stone, demonstrating a radical new way to tackle climate change.

The unique project promises a cheaper and more secure way of burying CO2 from fossil fuel burning underground, where it cannot warm the planet. Such carbon capture and storage (CCS) is thought to be essential to halting global warming, but existing projects store the CO2 as a gas and concerns about costs and potential leakage have halted some plans.
The new research pumped CO2 into the volcanic rock under Iceland and sped up a natural process where the basalts react with the gas to form carbonate minerals, which make up limestone. The researchers were amazed by how fast all the gas turned into a solid – just two years, compared to the hundreds or thousands of years that had been predicted.
“We need to deal with rising carbon emissions and this is the ultimate permanent storage – turn them back to stone,” said Juerg Matter, at the University of Southampton in the UK, who led the research published on Thursday in the journal Science.
Matter said the only thing holding back CCS was the lack of action from politicians, such as putting a price on carbon emissions: “The engineering and technology of CCS is ready to be deployed. So why do we not see hundreds of these projects? There is no incentive to do it.”

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Fungi Is Responsible For Majority Of Carbon Sequestration In Forests

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Northern boreal forests are easily recognized for their majestic trees and have been credited with helping to sequester much of the world’s carbon dioxide. It was originally thought that vegetative matter was what was sinking the greenhouse gas. Now, a diverse team of scientists from Sweden have discovered that these great, soaring plants are getting a lot of help from some humble decomposers living in the soil. Their findings, published in the journal Science, revealed that fungi were responsible for up to an incredible 70 percent of soil carbon in certain samples.

Researchers have long known that boreal forests were able to suck up a good deal of carbon, but were previously unclear as to where it went and how it was absorbed. They had thought that the carbon was carried to the tree’s needles and dropped to the forest floor where decomposition would leech it into the environment. If that were true, they would expect to find the newest carbon deposits close to the surface. However, after taking soil samples from over 30 islands and two small lakes in Sweden, they saw that the new deposits were more likely to be found farther down, pulled to the roots of the trees by fungus. The mycorrhizal fungus has evolved a special relationship with the trees where it colonizes in the roots and assists the tree. The fungus gets access to a more consistent stream of carbohydrates and other sugars, and the tree in return has access to more water and minerals.
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United Nations Say Small-Scale Organic Farming Is The Future Of Food Production

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Farming in rich and poor nations alike should shift from monoculture towards greater varieties of crops, reduced use of fertilizers and other inputs, greater support for small-scale farmers, and more locally focused production and consumption of food, a new UNCTAD report recommends.

The Trade and Environment Report 2013 warns that continuing rural poverty, persistent hunger around the world, growing populations, and mounting environmental concerns must be treated as a collective crisis. It says that urgent and far-reaching action is needed before climate change begins to cause major disruptions to agriculture, especially in developing countries.

The report, subtitled Wake up before it is too late: Make agriculture truly sustainable now for food security in a changing climate, was released today. More than 60 international experts contributed to the report’s analysis of the topic. The study notes that the sheer scale at which production methods would have to be modified under these proposals would pose considerable challenges. In addition, it would be necessary to correct existing imbalances between where food is produced and where it is needed, to reduce the power asymmetries that exist in agricultural input and food-processing markets, and to adjust current trade rules for agriculture.

The Trade and Environment Report 2013 recommends a rapid and significant shift away from “conventional, monoculture-based… industrial production” of food that depends heavily on external inputs such as fertilizer, agro-chemicals, and concentrate feed. Instead, it says that the goal should be “mosaics of sustainable regenerative production systems that also considerably improve the productivity of small-scale farmers and foster rural development”. The report stresses that governments must find ways to factor in and reward farmers for currently unpaid public goods they provide – such as clean water, soil and landscape preservation, protection of biodiversity, and recreation.

Climate change will drastically impact on agriculture, the report forecasts, primarily in the developing regions with the highest future population growth, such as sub-Saharan Africa and South Asia. Much slower agricultural productivity growth in the future and fast-rising populations in the most vulnerable regions will almost certainly worsen current problems with hunger, drought, rising food prices, and access to land. These pressures may easily lead to massive migrations, and to international tensions and conflicts over food and resources such as soil and water.

The report cites a number of trends that collectively suggest a mounting crisis:
• Food prices from 2011 to mid-2013 were almost 80 per cent higher than for the period 2003–2008;
• Global fertilizer use has increased by eight times over the past 40 years, although global cereal production has only doubled during that period;
• Growth rates in agricultural productivity have recently declined from 2 per cent per year to below 1 cent;
• Two types of irreparable environmental damage have already been caused by agriculture: nitrogen contamination of soil and water, and loss of biodiversity;
• Greenhouse gas emissions from agriculture are the single biggest source of global warming in the South. They also the fastest growing (along with emissions from transport);
• Foreign land acquisition in developing countries (often termed “land grabbing”) in recent years has amounted, in value, to between five and ten times the level of official development assistance.

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