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ArchaeologyThe Black Death chose its victims selectively
An analysis of medieval skeletons in England and Denmark finds that the devastating epidemic known as the Black Death killed excess numbers of people who were physically frail to begin with.
By Bruce Bower -
EarthEarly dioxin exposure hinders sperm later
Dioxin exposure at an early age affects sperm quality later in life.
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ChemistryChomping on uranium
Chemists forced the most common form of uranium into a new kind of chemical reaction, which could lead to new industrial applications and new tools to clean up the environment.
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