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Atmospheric Oxygen Levels Falling
Environment News Service (ENS)
1999: July 19, 1999SYDNEY, Australia, July 19, 1999 (ENS)
As levels of the greenhouse gas carbon dioxide rise, concentrations of oxygen in our air have fallen, according to scientists at the Australian government research organization, CSIRO, the Commonwealth Scientific Industrial Research Organization. "As fossil fuels burn, they generate carbon dioxide, using up oxygen in the process," explained Ray Langenfelds from CSIRO Atmospheric Research. "About half of the carbon dioxide from fossil fuels remains in the atmosphere," he says. Scientists from CSIRO have measured the miniscule decline in oxygen that has occurred during the past 20 years, the longest period over which such an assessment has been made. The team analyzed air dating back to 1978 from CSIRO's unique archive of pristine air collected at the remote Cape Grim Baseline Air Pollution Station operated by the CSIRO and Bureau of Meteorology in northwestern Tasmania.
CSIRO's oxygen measurements have been made with technology available only recently and provide what researchers say is an important constraint on identification of the factors that are influencing growth of carbon dioxide in the atmosphere. Findings based on the decline in oxygen have just been published in the international journal, "Geophysical Research Letters." "The changes we are measuring represent just a tiny fraction of the total amount of oxygen in our air - 20.95 percent by volume. The oxygen reduction is just 0.03 percent in the past 20 years and has no impact on our breathing," Langenfelds stated. "Typical oxygen fluctuations indoors or in city air would be far greater than this." The oxygen measurements shed new light on the extent to which the world's forests and oceans share the task of absorbing half the carbon dioxide generated by burning of fossil fuels. "While the oceans emerge as the slightly larger long-term sink, plants are clearly soaking up more carbon dioxide with time. If they weren't, levels of carbon dioxide would be far higher," says Langenfelds. Although deforestation during the past 20 years has released vast quantities of carbon dioxide, remaining plants are taking up much of this gas.
As plants photosynthesize, they produce oxygen, explaining why the oxygen decline in air has been less than expected. Researchers speculate that plants today could be growing more rapidly than in the past due to warmer conditions, higher carbon dioxide concentrations or increased nitrogen fertilization. Previously cleared land may be returning to forest, also absorbing carbon dioxide.
Madonna buys oxygen machines
Saturday, February 18 2006, 16:47 GMT - by Daniel Kilkelly
Madonna has bought oxygen machines for each of her homes.
The singer gives herself regular oxygen facials to improve her complexion, as well as using the machines to provide extra energy when she suffers from jet lag.
"You can take the oxygen machine and inhale if you're feeling really tired or jet-lagged, which is one of the reasons I have them at home," Madonna told a German magazine. "You just lie down for 10 minutes and put it in your nose. They are really great."
Oxygen systems as featured on Tyra Banks Show, MTV’s Dismissed, Urban Myths, and Fox’s Extreme Dating, and Discovery Channel’s Most Extreme™ oxygen systems trend has everyone talking from Hollywood celebrities like Woody Harrelson and Kirstie Ally to media like MTV, the LA Times and People Magazine. Here’s what people say about the oxygen craze!