Featured series 
Tag: Alexander More
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Nation & World
Six-year deluge linked to Spanish flu, World War I deaths
A new study of ice-core data shows that an unusual, six-year period of cold temperatures and heavy rainfall coincided with European deaths during the 1918 Spanish flu.
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Nation & World
The culture of Earth Day
As Earth Day turns 50, Harvard examines how it brought environmentalism into everyday life.
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Nation & World
Probing the Black Death for lead pollution insights
The natural level of lead in the air is essentially zero, according to research backed by data from the 14th-century Black Death, when mining and smelting ceased.
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Nation & World
Did famine worsen the Black Death?
New European ice-core data provides a view of the difficult times that led up to and may have worsened the Black Death.
