Word: ultraviolet
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...years scientists have puzzled over the rapid disappearance of frogs around the world. Last week a team of researchers from Oregon State University offered a possible explanation: the thinning of the ozone layer. The researchers argue that increased ultraviolet B radiation may be killing amphibian eggs before they hatch into tadpoles...
Anderson won the award for his work in detecting the molecules responsible for depleting ozone in the upper atmosphere. Ozone, a derivative of oxygen, absorbs harmful ultraviolet rays from the sun which can cause skin cancer...
...looking at the world. We're not talking about superiority and inferiority, but we're talking about the important factor of melanin." Blacks have more melanin -- a skin pigment -- than whites; Jeffries asserts, "It allows us to negotiate the vibrations of the universe and to deal with the ultraviolet rays of the sun." He draws a smaller triangle with "RNA" and "DNA" at the corners and "melanin" on top. Another paradigm...
...Experiments with mice indicate that sunscreens may not help prevent melanoma even though they protect against sunburn. By giving sunbathers a false sense of security, sunscreens may actually prolong exposure to damaging ultraviolet radiation...
Ozone is both a boon and a bane. High in the atmosphere, it protects the Earth from harmful ultraviolet rays, but down near the planet's surface, it is a notorious pollutant which damages the respiratory tract and ruins trees and crops...