Tag: "dioxide" at biology news
Eastern U.S. benefits from emissions trading by power plants
Study indicates sulfur dioxide
emissions shifting from Northeast to Midwest ... hold down the cost of pollution reduction. Sulfur dioxide
(SO2) is a primary cause of "acid rain." The research report is in the Oct. 15 print issue of the pe...
Unveiling all of the consequences: Introduced plants may be causing hidden trouble
...uality and may have increased the amount of carbon dioxide
in the atmosphere. Crested wheatgrass (sometimes called fairway wheatgrass) has wrested the soil from native grasses on much of the northern Great Plains, but its conquest has seemed relatively harmless to the larger environment. The grass was origin...
Reducing methane emissions could lower overall abatement costs
... additional greenhouse gas, methane, into a carbon dioxide
emission-reduction strategy," said Katharine Hayho... for short-term targets, methane can offset carbon dioxide
reductions and reduce U.S. abatement costs by more than 25 percent compared to strategies involving ...
Global warming threatens state's quality of life
...mple, we need to reduce our share of global carbon dioxide
emissions, limit the footprint of future development and do a better job of allocating our water resources. We must better protect biodiversity by creating an expanded, well connected system of nature reserves, especially at low elevations and in coa...
Koehler awarded NSF grant for study of atmospheric gases
...try a few years ago. Koehler has found that sulfur dioxide
adsorbs (sticks) to laboratory-produced soot and w...r this is a possible explanation of how the sulfur dioxide
in the atmosphere is being converted to sulfuric acid. Her previous awards include a Cottrell Colle...
Evidence for historic global warming published in Science
...ticle. "On land, higher partial pressure of carbon dioxide
and elevated temperatures quickly opened high-latitude migration routes for the widespread dispersal of mammals. Over several hundred thousand years, global carbon and oxygen cycles gradually returned to equilibrium conditions after the LPTM, althoug...
Explaining how ozone "chokes up" plants
...y of Sciences (PNAS). Plants take in the carbon dioxide
they need for photosynthesis through their stomate...dditional path that ozone takes to decrease carbon dioxide
assimilation and reduce plant productivity. Torsethaugen conducted the experiments with fava bean...
El Niño's dramatic impact on ocean biology and carbon dioxide captured by unique monitoring system
...e;o also dramatically reduced the amount of carbon dioxide
normally released into the atmosphere by the equat...gical productivity and the concentration of carbon dioxide
in the region. The launch of SeaWiFS in 1997 added yet another ocean-monitoring tool capable of dete...
Meet Conan the Bacterium
...s that converted Earth's environment from a carbon dioxide
atmosphere and calcium-rich seas to the more hospitable world we have today. Because these early lifeforms spoiled their home, they now survive in what we consider to be extreme environments. Mars, too, is considered to be an extreme environment. Bu...
One theory solves two ancient climate paradoxes
...uggest that levels of greenhouse gases like carbon dioxide
and methane were much higher then and these gases where what warmed the Earth. Jenkins used a global climate model of the Earth during the Archean with only slightly elevated carbon dioxide, but with tilt to 70 degrees and geography mirroring that ...
20th century marks achievements in food science and technology
...ife of fresh foods. CAP controls oxygen and carbon dioxide
in the packaging environment to limit produce respiration and ethylene production, thereby delaying ripening and spoilage. In 1953, U.S. Army begins food irradiation program and James Watson, Francis Crick, and Maurice Wilkins discover the double-he...
Past climate change effects on mammals may mirror global warming impact
...warming. First there will be an increase in carbon dioxide
levels and scientists don't know how plants will respond to this change. Also the plant community of the Great Basin has changed in the past l25 years with the introduction of exotic species such as cheat grass. "Homestead Cave is as close as we ...
The future of planet earth: scientific challenges in the coming century
...e rising at accelerated rates and levels of carbon dioxide
have increased worldwide. The West Antarctic Ice Sheet, which contains enough water locked up as ice to raise global sea-level substantially, is vulnerable to the effects of global change. The flyways of migratory birds, butterflies and shorebirds, ...
Iron-binding compounds produced by marine bacteria have important implications for marine microbial ecology
...,' phytoplankton are said to assimilate morecarbon dioxide
-- a greenhouse gas -- from the atmosphere when th...ans currently absorb a largefraction of the carbon dioxide
produced by man's burning of fossil fuels.The rate of accumulation of man-made carbon dioxide
Fossil plants' ties to ancient carbon redefined
...tors that could disrupt connections between carbon dioxide
levels in the atmosphere and in the plant. "Water is a good example. Plants take in carbon from the atmosphere through openings on their surface called stomata," Jahren says. "But that's also how water gets out of the plant. When there's low humidity...
Record breaking temperatures seen as evidence of faster rate of global warming
...d to manmade influences on climate, such as carbon dioxide
and other atmospheric constituents. Karl and his colleagues are not ready to say with certainty that the rate of global warming has suddenly increased, because they recognize that unusual events sometimes happen. There is strong evidence, they say, t...
Researchers find structure of enzyme that catalyzes 78-million-year reaction
...ntral to all living things to shed half the carbon dioxide
attached to it. When this chemical supercharger does its job, however, the process can occur some 30 times in a single second, University of North Carolina at Chapel Hill biochemists Anna Radzicka and Richard V. Wolfenden reported in 1995. That's th...
Study: Methane cleans nitric oxide from power plant emissions
... with the nitric oxide to form nitrogen, carbon dioxide
and water. Ozkan acknowledged ...ane, oxygen, water, and sulfur dioxide
-- for this part of the experiment. Oxygen and water did not interfere with the...
Colorado State and international scientists say loss in biodiversity by year 2100 could be consequence of global changes
...species." Of the global change drivers, carbon dioxide
levels are probably the hardest to assess in terms...ndirect effects through plants of increased carbon dioxide
concentrations may be significant, she said. On land, the researchers found, Mediterranean-clim...
Do US ecosystems balance US fossil fuel use?
Atmospheric carbon dioxide
gradients suggest that uptake of carbon dioxide
by US forests may balance US fossil fuel use. New model calculations and data, published in Science...
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