'Laughing gas' leaves ozone layer in splitsAugust 28th, 2009 WASHINGTON - A new study has determined that nitrous dioxide, popularly known as 'laughing gas', has now become the largest ozone-depleting substance emitted through human activities, and is expected to remain the largest throughout the 21st century. The study was authored by A.R.
Ozone depletion reduces CO2 uptake of Southern OceanAugust 9th, 2009 WASHINGTON - In a new research, scientists have determined that depletion in the ozone layer is reducing the atmospheric carbon dioxide (CO2) uptake of the Southern Ocean. Most current models predict that the strength of the Southern Ocean CO2 sink should increase as atmospheric CO2 rises, but observations show that this has not been the case.
Ozone and nitrogen change the way rising CO2 affects Earth's waterJuly 10th, 2009 WASHINGTON - A team of NASA-funded researchers have found that future concentrations of carbon dioxide (CO2) and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways. With the help of a modeling experiment, the researchers concluded that models of climate change may be underestimating how much water is likely to run off the land and back into the sea as atmospheric chemistry changes.
High ozone depletes productivity in oil seed rape plantsJune 29th, 2009 WASHINGTON - A new research indicates that high ozone conditions causes a 30 percent decrease in yield and an increase in the concentration of a group of toxic compounds within oilseed rape plants. Scientists arrived at these findings by combining the results of previous studies which have shown a decrease in oil, protein and carbohydrate content of oilseed rape seeds in high ozone.
Ozone protecting HFCs may increase global warmingJune 23rd, 2009 WASHINGTON - A new research has suggested that hydrofluorocarbons (HFCs), which are good for protecting the ozone layer from destruction, could increasingly contribute to global warming. The research was conducted by scientists from NOAA's Earth System Research Laboratory and their colleagues.
Ozone layer will recover in future, predict scientistsApril 11th, 2009 WASHINGTON - A new research by NASA scientists has suggested that the ozone layer might recover in the future, thanks to the changing climate and atmospheric circulation. According to the scientists, Earth's ozone layer should eventually recover from the unintended destruction brought on by the use of chlorofluorocarbons (CFCs) and similar ozone-depleting chemicals in the 20th century, since greenhouse gases are changing the dynamics of the atmosphere.
Climate change will set back ozone layer recovery: NASAApril 11th, 2009 WASHINGTON - Global warming will set back the recovery of the ozone layer of the earth's atmosphere, warns a NASA study. Previous studies have shown that while the build up of greenhouse gases makes it warmer in the troposphere, up to 10 km high from sea level, these gases actually cool the upper stratosphere, between 30 to 50 km high.
Gamma-ray burst may have caused mass extinction 440 million years agoApril 4th, 2009 WASHINGTON - A new study has suggested that a brilliant burst of gamma rays may have caused a mass extinction event on Earth 440 million years ago, and a similar celestial catastrophe could happen again in the future. Most gamma-ray bursts are thought to be streams of high-energy radiation produced when the core of a very massive star collapses.
Rocket launches may need regulation to prevent ozone depletionApril 1st, 2009 WASHINGTON - A new study by researchers in California and Colorado has suggested that the global market for rocket launches may require more stringent regulation in order to prevent significant damage to Earth's stratospheric ozone layer in the decades to come. The study, which includes the University of Colorado at Boulder and Embry-Riddle Aeronautical University, provides a market analysis for estimating future ozone layer depletion based on the expected growth of the space industry and known impacts of rocket launches.
Rocket launches may need regulation to prevent ozone destructionApril 1st, 2009 WASHINGTON - Rocket launches in future may require more stringent regulation to minimise damage to the ozone layer of the Earth's atmosphere, according to a new study. Today, just a handful of NASA space shuttle launches release more ozone-depleting substances in the stratosphere than the entire annual use of CFC-based medical inhalers used to treat asthma and other diseases in the US, said Darin Toohey, professor of Colorado University at Boulder (CUB) atmospheric and oceanic sciences department.
Two-thirds of Earth's ozone would have disappeared by 2065 in simulated worldMarch 20th, 2009 WASHINGTON - A new simulation has shown that if 193 nations had not agreed to ban ozone-depleting substances, then nearly two-thirds of Earth's ozone would have been gone by the year 2065. The simulation was developed by atmospheric chemists at NASA's Goddard Space Flight Center, Greenbelt, Maryland, Johns Hopkins University, Baltimore, and the Netherlands Environmental Assessment Agency, Bilthoven.
Without global pact, ultraviolet radiation would have singed us by 2065March 20th, 2009 WASHINGTON - What would happen if the planet's upper atmosphere were to be stripped of two-thirds of its ozone layer by 2065, not just over the poles, but everywhere?
Intense DNA-mutating ultraviolet (UV) radiation, up by 650 percent, falling on mid-latitude cities like Washington, would singe your skin in just five minutes, besides damaging plants, animals and aggravating skin cancer rates. Such is the world we would have if 193 nations had not agreed to ban ozone-depleting substances, according to atmospheric chemists at NASA's Goddard Space Flight Centre, Greenbelt, Johns Hopkins University, Baltimore, and the Netherlands Environmental Assessment Agency, Bilthoven.
Soon, ozone jabs to help relieve herniated disks painMarch 12th, 2009 WASHINGTON - Researchers from University of Toronto have suggested a new minimal invasive therapy for relieving the pain of herniated disks. The minimally invasive interventional radiology treatment uses oxygen/ozone to relieve the chronic pain of herniated disks.
Long-term ozone exposure linked to higher death riskMarch 12th, 2009 WASHINGTON - Long-term exposure to ground-level ozone, a component of smog, may result in increased risk of death from respiratory ailments, according to a new study throughout the US. Ozone, a gas made up of three oxygen atoms - forms a protective layer from the sun's ultraviolet radiation when located in the Earth's upper atmosphere.
Lungs response to ozone causes wheezing, airway irritationFebruary 3rd, 2009 WASHINGTON - Researchers have identified factors that cause airway irritation and wheezing after exposure to a common urban air pollutant like ozone. 'We found that it is not the ozone itself that causes the body to wheeze, but the way the lungs respond to ozone,' said Stavros Garantziotis, principal investigator at the National Institute of Environmental Health Sciences (NIEHS) and co-author of the study.
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