Articles with the keyword: 
U Oregon says that old growth forests should count double in forestry accounting
sea-maid submitted, created time 2 months 6 days (www.sciencedaily.com)
Contrary to forty years of conventional wisdom, a new analysis suggests that old growth forests are usually "carbon sinks" -- they continue to absorb carbon dioxide from the atmosphere and mitigate climate change for centuries.
However, international treaties, such as the Kyoto Protocol, do not take the age of forests into account when considering forest preservation. Researchers from the University of Oregan have proposed that old growth forests should count more in carbon accounting. 
Is Smokey the Bear Worsening Global Warming?
sea-maid submitted, created time 3 months 3 weeks (sciencenow.sciencemag.org)
Scientists have long believed that preventing or dousing forest fires helps combat global warming by saving trees and thus allowing forests to take up more carbon dioxide from the atmosphere. But surprising new data on hundreds of California forest sites suggest the opposite. The work could help quantify the role of forests in the global carbon cycle and shape U.S. federal fire policy.
Small, natural fires thin out shrubs and small trees without killing larger trees. This allows the larger trees, which absorb the most carbon, to flourish without interference
Answer to Carbon Emissions May Lie Under the Sea
jerry submitted, created time 4 months 1 day (sciencenow.sciencemag.org)
Scientists may have found a way to chemically lock up a trillion metric tons of carbon dioxide, many times the expected global carbon emissions over the next century. The plan involves injecting the greenhouse gas into huge formations of the porous volcanic rock basalt that lie on the sea floor. The approach would be expensive, however, and a host of questions remain about the technique.
sumsung submitted, created time 7 months 1 week (www.sciam.com)
Researchers announced this week that they are perfecting a procedure designed to turn pollution into a type of plastic used to make everything from DVDs to eyeglass lenses. The effort is being touted as a way to capture and use climate change–causing carbon dioxide (CO2) emissions from coal-fired power plants and other sources instead of releasing it into the atmosphere or burying it underground.
Sue Wu submitted, created time 8 months 2 weeks (sciencenow.sciencemag.org)
After analyzing pollution levels for carcinogens, ozone, and particulates, Jacobson found that each degree of warming caused by CO2 could be responsible for roughly 1000 deaths to the 50,000 to 100,000 annual deaths in the U.S.
jane2007 submitted, created time 9 months 4 days (www.time.com)
Most of us think using biofuels rather than oil would reduce the greenhouse gases that accelerate global warming. But according new research, biofuels may not fulfill that promise — and in fact, may be worse for the climate than the fossil fuels, almost all the biofuels used today cause more greenhouse gas emissions than conventional fuels, if the full environmental cost of producing them is factored in.
Ships' greenhouse emissions revealed
sumsung submitted, created time 9 months 6 days (www.nature.com)
The amount of carbon dioxide emitted by the world's shipping industry is much higher than previously thought, according to the latest estimate from the United Nations. The new figures, released on 8 February by the International Maritime Organization (IMO), based in London, show that emissions from cargo ships are about twice those from global air travel.
Researchers suggest fuels pulled from the air, but there are problems
Darkfrog submitted, created time 9 months 1 week (dotearth.blogs.nytimes.com)
Drawing CO(2) from the air for fuel would be truly carbon-neutral. The catch here seems to be that the energy to do the drawing would have to come from somewhere. This particular lab suggests nuclear power, which is cleaner and safer than its public image would suggest but carries the attending problems of the time and money it takes to build facilities (and of bothering the Navajos again for their uranium, maybe after a few hundred years of not screwing them over). Other researchers at Columbia U. propose a solarthermal solution. Which seems more feasible to you guys?
Could global gardening fix climate change?
jane2007 submitted, created time 10 months 1 week (www.nature.com)
According to a new analysis, using biomass fuel on a massive scale in combination with carbon sequestration could return atmospheric carbon dioxide to pre-industrial levels within decades Peter Read calls his proposal global gardening. Is it will work, I doubt.
Researchers Prove How Plants Transport Sugars
Eric wu submitted, created time 10 months 2 weeks (www.sciencedaily.com)
How do many plants ship sugars from their leaves to flowers, roots, fruits and other parts of their structure? Using genetic engineering techniques, Cornell researchers have finally proven a long-standing theory of how this occurs.
Countries with highest carbon dioxide-emitting power sectors (tonnes per year)
yangjane submitted, created time 1 year 1 week (www.nature.com)
With some 8,000 power plants emitting 2.5 billion tons of carbon dioxide annually, the United States accounts for a quarter of global emissions, according to the site. China comes a close second at 2.4 billion tons, although its per capita emissions are less than a quarter of those of the United States. Russia comes a distant third, with 600 million tons of carbon dioxide emissions.
This text is about the compositor of countries with highest carbon dioxide and the reason why carbon dioxide was high.We can hnow power plant is the first factor.
Convention discourages ocean fertilization
yangjane submitted, created time 1 year 1 week (www.nature.com)
The parties to the London Convention, an international treaty that governs ocean pollution, have agreed that large-scale ocean ‘fertilization’ isn't yet justified, given gaps in scientific knowledge. The convention, which regulates activities such as the dumping of garbage at sea, had not previously taken a stand on the notion of throwing nutrients into the ocean with the intention of promoting plankton growth.
This artical give us the view of government abou ocean fertilization and dumping of garbage at sea.
Bacteria to blame for global warming?
superapple submitted, created time 1 year 1 week (www.theregister.co.uk)
Researchers from the University of Arizona's Department of Climatology, and the Department of Atmospheric Physics at Gothenburg University have published research they believe will overturn the consensus view that man's activities are causing global warming.
CO2 emissions could violate EPA ocean-quality standards within decades
bianjie submitted, created time 1 year 2 months (www.eurekalert.org)
In a commentary in the Sept. 25, 2007, issue of the Geophysical Research Letters, a large team of scientists state that human-induced carbon dioxide emissions will alter ocean chemistry to the point where it will violate US Environmental Protection Agency Quality Criteria (1976) by mid-century if emissions are not dramatically curtailed now. This is the first recognition that atmospheric CO2 emissions will cause ocean waters to violate EPA water quality criteria.
scott submitted, created time 1 year 2 months (www.pnas.org)
A hypothesis has been advanced that the incursion of woody plants into world grasslands over the past two centuries has been driven in part by increasing carbon dioxide concentration, [CO2], in Earth's atmosphere.
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