Word: ultraviolet
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...cloud barrier would shut out the sun; this "greenhouse" effect would dangerously raise the earth's surface temperature. There were also predictions of skin cancer epidemics: nitrogen oxides released by the SSTs would destroy the ozone layer that partly shields the earth against the sun's lethal ultraviolet radiation. Then too, the SST's fumes were denounced as a potential new cause of massive pollution...
...samples to incubate longer in order to give any microbes present a better chance to grow. The experiments will be run at temperatures closer to the frigid levels that prevail on Mars. Also, in a search for life that may have burrowed deeper into the Martian soil to escape ultraviolet radiation bombarding the surface, one of the landers will try to dig 30.5 centimeters (1 foot) deep for a soil sample. Explains Klein: "We want to play out our whole set of cards before we make our best judgment on the question of life on Mars...
...live without them. A committee of the National Research Council concluded in a report released last week that the fluorocarbon gases used as propellants for spray products deplete the ozone layer. It is that shield which protects the earth from an overdose of the sun's potentially deadly ultraviolet rays. The report sets the stage for an eventual ban on the sprays...
...atoms react with and thus destroy ozone molecules. According to the NRC report, if the fluorocarbon release continues at the 1973 rate, it could ultimately deplete the three-mile-thick ozone layer by as much as 7%. Public health authorities predict that the subsequent increase in the amount of ultraviolet light reaching the earth would raise by about 200 the number of Americans afflicted annually by malignant melanoma, a form of skin cancer that now strikes an estimated 8,400 and kills some 2,700 each year. The ozone loss would bring an increase in other forms of skin cancer...
...serums of animals or of patients who have recovered from known diseases), tagged with a fluorescent substance. If any of the antibodies have had a "charge effect," the equivalent of a magnetic attraction, joining a virus or one of the bacteria, some of the antibody mixture will glow under ultraviolet light. If there has been no take, all the antibody will have been washed off. Hence, no glow...