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AstronomyMilky Way gets a new layer
Astronomers propose that 150 billion corpses of sunlike stars may blanket the visible disk of the galaxy.
By Ron Cowen -
ChemistryQuestions of Origin
Two new studies renew controversy about the authenticity of a map that may be the first depiction of North America.
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Materials ScienceVision Quest
Increasing numbers of people with less-than-perfect vision can now wear contact lenses, thanks to innovations in lens design and materials.
By Corinna Wu -
AnimalsBees log flight distances, train with maps
After decades of work, scientists crack two problems of how bees navigate: reading bee odometers and mapping training flights.