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How Astronomers Discovered the Universe's Hidden Light

Galaxies in every corner of the universe have been sending out photons, or light particles, since nearly the beginning of time. Astronomers are now beginning to read this extragalactic background light

By Alberto Domínguez, Joel R. Primack and Trudy E. Bell

Inside the Inflammation Factory

A newly discovered structure in cells underlies inflammation wherever it occurs—an insight that may lead to new treatments for ailments as diverse as atherosclerosis, Alzheimer's and fatty liver disease

By Wajahat Z. Mehal


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