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Living organisms are distinguished by their chemical basis. Thus, knowledge of the properties of the elements and the interactions of the resulting compounds is a prerequisite for understanding biology. Chemistry answers the questions of why, among the more than 100 elements of the periodic table (PSE), carbon and not silicon is the dominant element in biology and why precious metals, such as gold and silver, do not play a role. The PSE provides information about why phosphoric acid and not sulfuric acid acts as a bridge in polynucleic acids and why DNA had to evolve from RNA. At the same time, only chemistry makes clear why D-glucose is so central in building biopolymers such as cellulose a...
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The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
The wives of rulers in early modern Europe did far more than provide heirs for their principalities and adornment for their courts. In this study, Judith Aikin examines the exceptionally well-documented actions of one such woman, Aemilia Juliana of Schwarzburg-Rudolstadt (1637-1706), in order to expand our understanding of the role of ruler’s consort in the small principalities characteristic of Germany during this period. Aikin explores a wide range of writings by her subject, including informal letters to another woman, hundreds of devotional song texts, manuscript books both devotional and practical, and published pamphlets and books. Also important for this study are the plays, paintin...