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Tag: "dioxide" at biology news

Soils offer new hope as carbon sink

... and found significantly lower emissions of carbon dioxide and nitrous oxide (a greenhouse gas more than 300 times as potent as carbon dioxide). NSW DPI environmental scientist Steve Kimber said an added benefit for both the farmer who applies agrichar and the environment is that the carbon in agrichar re...

Envisat captures first image of Sargassum from space

...ytoplankton and seaweed, absorb atmospheric carbon dioxide through photosynthesis and convert it into organic carbon. By absorbing half of the carbon dioxide emitted into the atmosphere, the oceans have a profound influence on climate, making them major area...

Dirty snow may warm Arctic as much as greenhouse gases

The global warming debate has focused on carbon dioxide emissions, but scientists at UC Irvine have determ...would brighten and temperatures would cool. Carbon dioxide lives in the atmosphere for a century, so cutting back on emissions can prevent further warming but ...

Researchers examine carbon capture and storage to combat global warming

...ge, also called carbon sequestration, traps carbon dioxide after it is produced and injects it underground. T...s for the technology, he said. Capturing carbon dioxide from small, mobile sources, such as cars, would be more difficult, Orr said. But with power plants c...

UCF nanoparticle offers promise for treating glaucoma

...re occurs, in part, because of a buildup of carbon dioxide inside the eye, and the compound blocks the enzyme that produces carbon dioxide. Seal and a team of collaborators including Sanku Mallik, of North Dakota State University, developed the research on using nanoparticles as a delivery mechanism for t...

Scientists close in on missing carbon sink

...removing an unexpectedly high proportion of carbon dioxide from the atmosphere, partially offsetting carbon e... The team found that some 40 percent of the carbon dioxide assumed to be absorbed by northern forests is instead taken up in the tropics. "Our study will pr...

Antarctic icebergs -- Hotspots of ocean life

...-floating icebergs can serve as a route for carbon dioxide drawdown and sequestration of particulate carbon as it sinks into the deep sea,” said oceanographer Ken Smith of the Monterey Bay Aquarium Research Institute (MBARI), first author and principal investigator for the research. “While the melting of...

Arctic ice retreating more quickly than computer models project

...ail to capture the full impact of increased carbon dioxide and other greenhouse gases in the atmosphere. Whereas the models indicate that about half of the ice loss from 1979 to 2006 was due to increased greenhouse gases, and the other half due to natural variations in the climate system, the new study indic...

Protein enables discovery of quantum effect in photosynthesis

...ascade. Photosynthesis transforms light, carbon dioxide and water into chemical energy in plants and some bacteria. The wavelike characteristic of this energy transfer process can explain its extreme efficiency, in that vast areas of phase space can be sampled effectively to find the most efficient path f...

'Short-circuit' found in ocean circulation

...d is also relevant to uptake and release of carbon dioxide by the sea ?transport between the deep and surface waters in the Southern Ocean is particularly important for this process. Understanding oceanic circulation is important because it distributes heat, carbon and nutrients around the globe and ther...

Researchers find link between food odors and lifespan in fruit flies

...the flies' metabolic rates by analyzing the carbon dioxide they give off. At the cellular level, this meta...the flies' metabolic rates by analyzing the carbon dioxide they give off. At the cellular level, this metabolic process is essentially the same in all organ...

Tropical forests -- Earth's air conditioner

... and protecting trees—which trap and absorb carbon dioxide as they grow—can help to remove carbon dioxide from the atmosphere. But a new study suggests that, as a way to fight global warming, the effectiven...

Scientists uncover link between ocean's chemical processes and microscopic floating plants

... that increased levels of ocean acidity and carbon dioxide concentrations have resulted in unexpected changes...ment. The researchers simulated present-day carbon dioxide concentrations and ocean acidity, and carbon dioxide levels expected at the end of this century and ...

How trees manage water in arid environments

...acterize the surface exchanges of water and carbon dioxide in a forest in the Santa Catalina Mountains near Tucson, Ariz. Mountain forests are an important source of water for the rest of such semi-arid regions, and these forests provide relatively isolated conditions where scientists can get a clearer pictu...

Progress toward artificial photosynthesis?

Plants can do it: they simply grab carbon dioxide out of the air and covert it into biomass. In this process, known as photosynthesis, the plants use light as their energy source. Chemists would also like to be able to use CO2 as a carbon source for their synthetic reactions, but it doesn’t work jus...

Grape expectations for healthier wine

...ge for months and are usually treated with sulphur dioxide to prevent decay. Although the sulphur dioxide is effective, it is corrosive and can cause severe allergic reactions in some people. Wine-makers ha...

New biofuels process promises to meet all US transportation needs

...uring this step suppresses the formation of carbon dioxide and increases the efficiency of the process, makin...e efficient by suppressing the formation of carbon dioxide and converting all of the carbon atoms to fuel. When conventional methods are used to convert bio...

Custom-made cancer cell attacks

...said, noting that plants absorb atmospheric carbon dioxide during photosynthesis, which compensates for the CO2 that is released when biofuels burn. Environmental costs Some environmentalists criticize the use of biofuels by arguing that planting large quantities of corn or grass to produce ethanol w...

Cellulosic ethanol: Fuel of the future?

...said, noting that plants absorb atmospheric carbon dioxide during photosynthesis, which compensates for the CO2 that is released when biofuels burn. Environmental costs Some environmentalists criticize the use of biofuels by arguing that planting large quantities of corn or grass to produce ethanol w...

Gene chips forecast ecological impacts of climate change

...the atmosphere and the role of the ocean in carbon dioxide sequestration, marine ecosystems will experience temperature changes combined with changes in ocean pH –?ocean acidification. As a consequence of the elevated levels of the greenhouse gas, carbon dioxide, the predictions for ocean acidification ...

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