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Latest Aura Stories

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2006-10-10 12:54:56

What does a garden have to do with the chemistry of the atmosphere and air quality? One of the newest exhibits at NASA Goddard's Visitor Center, Greenbelt, Md., is a project related to NASA's Aura satellite. Aura is currently studying atmospheric chemistry and air pollution from space.  The new Aura Ozone Monitoring Garden is used to study air quality from the ground by seeing how ozone in the air damages the leaves of certain plants. During the summer months of intense sunlight, the...

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2006-09-26 08:45:00

A NASA and university study of ozone and carbon monoxide pollution in Earth's atmosphere is providing unique insights into the sources of these pollutants and how they are transported around the world. For the first time, NASA and university researchers used simultaneous observations of carbon monoxide and ozone from space to differentiate between ozone produced from human activity and ozone produced from natural sources. Ozone is an important pollutant and a major component of smog. At high...

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2006-08-06 08:55:00

By Deborah Zabarenko BELTSVILLE, Maryland -- The weather outside was frightful: hot, humid and layered with a haze of pollution so thick it seemed it could be cut with a machete -- a perfect day to use balloons and a satellite to monitor some bad air. On the last full day of a monthlong heat wave, when most sensible people might prefer to be sitting in the shade with a cool drink, climate scientists were out in a sunny field, coordinating the launch of a weather balloon with a satellite...

2006-07-24 11:02:18

(Corrects to include dropped line in first paragraph) CHICAGO, July 18 (Reuters) - People who experience vision abnormalities before a migraine strikes are at double the risk of heart disease compared to people who do not get the debilitating headaches, a study said on Tuesday. The "aura" that immediately precedes a migraine affects sufferers differently, with some combination of dizziness, flashes or spots of light, and temporary loss of vision. Among the 28 million Americans,...

2006-07-18 15:00:00

CHICAGO (Reuters) - People who experience vision of heart disease compared to people who do not get the debilitating headaches, a study said on Tuesday. The "aura" that immediately precedes a migraine affects sufferers differently, with some combination of dizziness, flashes or spots of light, and temporary loss of vision. Among the 28 million Americans, mostly women, who suffer migraines, fewer than one-third experience the aura beforehand that was linked in the study to the increased risk...

2006-07-04 11:25:00

NEW YORK -- Adults who suffer from bouts of migraine without aura have slightly narrower retinal blood vessels, or arterioles, than adults without migraine, research shows. The finding supports the hypothesis that microvascular disease may be associated with certain types of migraine, investigators note in a report in the journal Headache. Dr. Gerald Liew from the University of Sydney, Australia and colleagues used recently developed quantitative techniques to measure small vessel calibers...

2006-06-22 13:30:20

By Karla Gale NEW YORK (Reuters Health) - A device that delivers magnetic pulses through the skull to the brain may become a migraine sufferer's best friend, new research indicates. Transcranial magnetic stimulation, or TMS as the technique is called, prevents or reduces the severity of migraines, according to preliminary studies reported Thursday at the annual meeting of the American Headache Society in Los Angeles. "Migraine starts because of neuronal hyperexcitability, during...

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2006-05-10 17:32:44

NASA and university researchers have found that thunderstorms over Tibet provide a main pathway for water vapor and chemicals to travel from the lower atmosphere, where human activity directly affects atmospheric composition, into the stratosphere, where the protective ozone layer resides. Learning how water vapor reaches the stratosphere can help improve climate prediction models. Similarly, understanding the pathways that ozone-depleting chemicals can take to reach the stratosphere is...

2006-01-27 11:15:00

By David Douglas NEW YORK (Reuters Health) - Children who have migraine with aura are at substantially increased risk of developing epilepsy, researchers from the United States and Iceland report. However, they found no apparent relationship between seizures and migraine without aura. Senior investigator Dr. W. Allen Hauser told Reuters Health, "a possible association between migraine and epilepsy has long been recognized, but the exact relationship is not clear." This study, he added, shows...

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2005-12-06 18:06:09

NASA's 2005 assessment of the size and thickness of the ozone layer was the first based on observations from the Ozone Monitoring Instrument on the agency's Aura spacecraft. Aura was launched in 2004. This year's ozone hole measured 9.4 million square miles at its peak between September and mid-October, which was slightly larger than last year's peak. The size of the ozone hole in 1998, the largest ever recorded, averaged 10.1 million square miles. For 10 of the past 12 years, the Antarctic...