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Study questions nature's ability to 'self-correct' climate change

2013-08-07 03:31:00| Climate Ark Climate Change & Global Warming Newsfeed

SCIENCEDAILY: The study, available online in the journal New Phytologist, aimed to explore how rising atmospheric carbon dioxide could alter the carbon and nitrogen content of ecosystems. By performing tests on subtropical woodland plots over an 11-year period, the researchers found that ecosystem carbon uptake was not significantly increased by the high CO2 treatmentin contrast to expectations. While plants did contain more carbon when CO2 levels were increased, soil actually lost carbon due to microbial decomposition;...

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Study Questions Role of Natural Gas in U.S. Carbon Emissions Drop

2013-07-30 10:01:00| Climate Ark Climate Change & Global Warming Newsfeed

InsideClimate: Aggressive energy efficiency efforts by households, companies and motorists led to the decline in carbon dioxide emissions from energy use in the United States, according to a recent report. The finding contradicts recent studies that say the power sector's shift away from coal to cheap natural gas caused the bulk of reductions. U.S. emissions last year fell by 205 million metric tons, or 4 percent, from 2011 levels. CO2 Scorecard Group, a small environmental research organization, says that nearly...

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New Geology study raises questions about long-held theories of human evolution

2013-01-31 11:00:00| LifeSciencesWorld

[NEWS] Contact: Robert Perkins perkinsr@usc.edu 213-740-9226 University of Southern California What came first: the bipedal human ancestor or the grassland encroaching on the forest? A new analysis of the past 12 million years' of vegetation change in the cradle of humanity is challenging long-held beliefs about the world in which our ancestors …

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Africa: New Study Questions Sustainability of Biofuel Harvested On Dry Lands

2013-01-23 13:59:00| Climate Ark Climate Change & Global Warming Newsfeed

AlertNet: The high amount of carbon that pours into the atmosphere when arid and semi-arid land is converted for Jatropha oil production may outweigh the environmental benefits of such a biofuel, says a new report. The findings run contrary to popular beliefs. As the world struggles to find ways to reduce greenhouse gas emissions to mitigate climate change many countries are embracing "clean-burning" biofuels as the renewable energy of choice. Biofuel crops planted in semi-arid landscapes are considered...

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