Word: carbonated
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Dates: during 1970-1979
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...risk is obvious: smoke-filled air contains visible smoke particles and invisible gases that may irritate the eyes and nasal passages. These same substances may also trigger allergic reactions. The least obvious and most insidious danger is that a colorless gas, carbon monoxide, may get into the nonsmoker's bloodstream in sufficient quantity to damage his heart and lungs or exacerbate heart-lung disease that he already...
...earth. It did, for example, evolve during untold eons on earth when there was no oxygen in the atmosphere. To those primitive forms of life, in fact, oxygen would have been a poisonous gas. Thus instead of requiring oxygen, Martian organisms, like some terrestrial bacteria, might thrive in a carbon dioxide environment. To obtain water if they need it, Martian organisms may have evolved mechanisms to unlock the supply chemically bound into the rocks
...leading some scientists to theorize that the region was scoured clean by glaciers as the polar cap grew during Martian winters and then receded again. If glaciers were indeed responsible, their presence would indicate that there is more water in the polar cap (which is composed largely of frozen carbon dioxide, or dry ice) than anyone had supposed. Mariner has also discovered four craters that the U.S. Geological Survey's Harold Masursky and others believe are extinct volcanoes, one of them relatively young. Exobiologists are excited by the finding because they think that most of the amino-acid-building gases...
Since that discovery, about two dozen molecules, including carbon monoxide, formaldehyde, ethyl alcohol and water, have been identified in distant space...
...planet is one, the second planet two, and so on, scientists can spot the alien binary code. Giving their imaginations free rein, they can also recognize that the three groups of dots to the right of the star represent atomic diagrams: hydrogen (with one electron circling a central nucleus), carbon (six electrons and a nucleus) and oxygen (eight electrons and a nucleus). The atoms chosen suggest that life on the distant planet is based on a carbohydrate chemistry...