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All Articles for Magazine issue 1990 (Volume 21, No. 1)
Year (Volume & No.)TitleAbstractAuthorDownload
1990 (Volume 21, No. 1)Biotechnology II: Engineering Useful PlantsProgress is being made along a broad front in the engineering of rice and other important food crops. More is needed if insight is to be put to use.Anne MoffatPDF
1990 (Volume 21, No. 1)Cultural Evolution: The Emergence of Modern HumansAn explosion of culture and technology marks the appearance of modern humans in the Upper Paleolithic.John PfeifferPDF
1990 (Volume 21, No. 1)Goedel: The Long Shadow of Kurt GoedelEarly in his career, Kurt Goedel shook the foundations of mathematics. His work has since become part of the bedrock of mathematical research.T.A. HeppenheimerPDF
1990 (Volume 21, No. 1)Helioseismology: Seeing into the SunAn infant discipline is forcing radical revision of long-held notions of phenomena at the solar core.Marcia BartusiakPDF
1990 (Volume 21, No. 1)Homologous Recombination: DNA on TargetAn array of ingenious techniques and strategies has enabled researchers to target genetic change with extraordinary precision. The upshot is less guesswork and more design in genetic engineering.Ben PatruskyPDF


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