Word: oxygenate
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...isotopes, or forms, of carbon. They found that the amount of carbon 12, the isotope most utilized in biological processes, was high in relation to carbon 13. This indicates that the hydrocarbons were produced by photosynthesis, the process by which plants convert carbon dioxide into organic compounds and oxygen. Ponnamperuma's find shows that life was present on earth 3.8 billion years ago, when the planet was only 800 million years old. The oldest previously known terrestrial life dated back 3.4 billion years...
With Pavarotti this is a conscious intention. He senses his voice traveling along a separate thread to each member of the audience, and he depends desperately on the response that returns along that thread. "Applause is our oxygen." he says, and the more vociferous, even hysterical, the better. He feels that his voice blossoms before a 'hot" audience. When he began giving concerts and recitals, however, the intimacy with the audience and the absence of operatic costumes caused him to lose concentration. Now he sings to an imaginary listener, whom he pictures in the center of the balcony, in order...
...swimmer will start to feel the drop in oxygen at about 3000 feet above sea level. The air in Mexico City, located about 7000 feet above sea level, caused several swimmers to hyperventilate and "due to the altitude, no one in the meet from the U.S. team swam their best times," Stephie Walsh, coach of the Harvard women's swim team and manager of the U.S. team at the Games, said...
...President Truman said if you can't stand the heat, get out of the kitchen. All politics is kitchens, and Harvard is like a breath of pure oxygen," he says...
...soon as the tail cone ripped away, the airliner lost cabin pressure rapidly. Oxygen masks popped down from overhead racks immediately, and the pilot nosed the craft down to an altitude where decompression would not injure the passengers...