Report: High Carbon Dioxide Boosts Duke Forest Growth By 25 Percent
...r forests to sop up increasing human-caused carbon dioxide emissionshad been only speculative, "now we have s...erve as a"sink" for about half the expected carbon dioxide emissions from fossil fuelcombustion, according to estimates of DeLucia and Duke botany professor Wi...Melatonin: More Than You Bargain For?
..." The scientists found that carbonate and nitrogen dioxide radicals, which areconstantly formed in the human body from peroxynitrite, react with melatonin toform two cyclic metabolites that resemble brain signaling chemicals but whosebiological function is unknown. "Our kinetic modeling, using competitivere...Micro-organisms help protect drinking water from MTBE contamination
...ditives are converted primarily to harmless carbon dioxide through aprocess called mineralization, in which the microbes essentially consume theMTBE and TBA. Approximately 30 percent of the gasoline sold in the UnitedStates contain additives that have been included as oxygenates to help lowerpollution level...Oxygen measurements yield greenhouse clues
As levels of the greenhouse gas carbon dioxide rise, concentrations of oxygen inour air have fall...IRO Atmospheric Research. "Abouthalf of the carbon dioxide from fossil fuels remains in the atmosphere." "The changes we are measuring represent just a tiny fr...... of food and oxygen anda means of recycling carbon dioxide -- aren't ready for the weightless conditionknown as microgravity. "A root always grows down, a process known as gravitropism, which meansroot cells have some mechanism to know where gravity is," said Reddy, anassociate professor of biology. ...Astronauts blame their space station symptoms on bad air
...which might mean that a build-up of exhaled carbon dioxide is toblame. A more sinister problem would be the release of volatile chemicals frommaterials used to manufacture Zarya. According to the leaked documents, theastronauts described a definite odour in Zarya. They were concerned that therewas a large am...National Science Board selects leading chemists to establish new Science and Technology Center
...ally responsible science," he said. Carbon dioxide long was thought by scientists to be extremely lim...luded design of surfactants(detergents) for carbon dioxide that enabled it to be a powerful solvent formany solvent- and water-intensive industries. "C...Nearly half of Earth's land has been transformed by humans; 50 'dead zones' found in oceans
...continue to increase the concentrations of carbon dioxide and otherheat-trapping gases in the atmosphere. Lubchenco pointed out that while human domination of land masses is clear, thenew data also indicates a dramatic alteration of Earth's oceans. There are nowsome 50 'dead zones' in the world's coasta...UW professor's climate change theory leads to NASA mission
...cumented change is a 30 percent increase in carbon dioxide during thelast century that, among other things, has triggered a fundamental change inphotosynthesis for all plants, he said. It remains to be determined when andwhere that change might be good or bad. Other atmospheric changes aren't as well documen...Smog impacts: Hurtling through airways, tiny particles may do more damage than previously assumed
...f each respiratory branch, where oxygen and carbon dioxide tradeplaces with blood-these particles take up water and expand, much like a sponge,because of hydroscopic effects." Mathematical models of these physical events (dispersion and hydroscopicexpansion) suggest that "the smallest particles can sometimes...Ship sulfur emissions found to strongly impact worldwide ocean and coastal pollution
...ns are a dominant contributor to atmosphericsulfur dioxide concentrations over much of the world's oceans and in severalcoastal regions, researchers from Carnegie Mellon University and Duke Universityreport in a Nature article today. This news follows the Carnegie Mellon team's initial finding that ......troleumgeologists can detect 1,000 year-old carbon dioxide bubblesencapsulated in slices of rock, findings that suggest oil's presence. Forensics experts and crime labs analyze "trace evidence" -- single fibers,threads, blood samples, human hair. Automobile identification based on a paintfleck from a hit-and...Mosquitoes have discriminating tastes, UF researchers find
...miles away is breathe.As they exhale, their carbon dioxide and other odors mix to produce a plume thattravels through the airstream. The plume acts like a dinner bell to mosquitoes,letting them know a warm-blooded meal is within range. They fly up the plume in zigzag fashion until they arrive, for example, a...Air pollution hits children with asthma hardest, USC study finds
...of "particulates" and related pollutants, nitrogen dioxide andacid, in the air is associated with higher rates of bronchitis and phlegm amongchildren with a doctor diagnosis of asthma. Particulate matter refers tomicroscopic suspended particles of dust, including products of combustion fromautomobiles or eve...Climate change and greenhouse gases: The scientific literature reviewed
... the Earth's surface. The authors note that carbon dioxide is not the only influence on global climatechange,... geologic history, large-scalevariations in carbon dioxide have always been accompanied by simultaneouschanges in other components of the carbon cycle and the ...Cleaner air and less acidification among proposals for new environmental goals
...aging levels. Thismeans that thelevels of nitrogen dioxide in some of the busiest streets in the country mustdrop by 40-60 per cent.The ozone levels in the air must be halved if this environmental qualityobjective is to be achieved.Since most ground-level ozone comes from the continent, considerable reductio...Researchers discover hemoglobin's enzymatic nature
...three gases involved in respiration, oxygen,carbon dioxide and nitric oxide. "The worm is evolving the first indications of a respiratory functioninvolving oxygen concentrations," Stamler said. "The worm is controlling oxygenconcentrations by using nitric oxide just as we do -- only with a differentoutcome....Uncovering the role of water vapor in climate change
...toexplain changes in our climate. Although carbon dioxide gets most of theattention in greenhouse gas discussions, water vapor plays an even bigger rolein heating up the Earth's atmosphere. This is because of water's uniquemolecular structure and potential heat stored within water that has an influenceon s...Symposium by ISPRS and the U-M College of Engineering
... United States, built a frameworkfor global carbon dioxide emission reductions, and set goals for 38industrialized nations to reduce greenhouse gas emissions by 2012. One of theinnovative approaches hammered out at Kyoto was the notion of creating a worldmarket for "carbon credits." Parties that could cert......y over 60 percent compared with controlling carbon dioxide (CO2)alone. The study also indicates flaws in the "yardstick" by which gases are comparedunder the Kyoto Protocol, an agreement now signed by 84 countries, including theU.S., that was negotiated in December 1997 with the intent of slowing globalwarm...