Word: oxygenation
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Forests are crucial for reducing the amount of carbon dioxide in the atmosphere because they convert carbon dioxide into oxygen through photosynthesis...
Normally, says Avery, the lung contains a constant residue of oxygen, even on exhaling. But in infants with RDS, the lung does not contain this residue, and breathing remains difficult...
Black lung, a condition that develops after years of breathing coal dust, gradually robs the lungs of their ability to absorb oxygen. In advanced cases, patients are tethered to breathing machines that they carry around with leather straps or on caddies. When some patients travel out of town, they must calculate the distance and how long their portable oxygen tanks will last, as if they were living underwater...
...Albert Perry feels. Like his father and grandfather before him, he went into the mines. Twenty-two years later, he emerged as a man old beyond his years, his frail 112-lb. frame racked with a convulsive cough. Now 55, he is rarely out of reach of an oxygen machine. In his struggle to claim black lung disability, he is no match for Island Creek Coal Co. Perry never finished elementary school. A collector of baseball cards, he enjoys the pictures but cannot read the text. Island Creek has stoutly resisted his claims, arguing that his condition is the result...
...cosmetics firms are trying to capitalize on preliminary scientific research suggesting that certain vitamins and other chemicals may improve skin appearance. Some seem to counteract the bad effects of substances called free radicals, which are produced regularly by the body's metabolism. These highly volatile substances -- oxygen ions are one example -- react with cell membranes, and over time the radicals may play a role in various ailments and the aging process itself. There is evidence that at least one radical-fighting skin cream, a vitamin-A derivative called Retin-A, stimulates skin-cell production, but it is sold only...