The Commonplace
A daily record of things worth noticing.
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A law from 1853, broken this month
In ultraclean graphene, heat and charge have come uncoupled by more than two hundred times — and with them, one of the oldest relations in metal physics.
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The palimpsest of Hipparchus
The most precise star catalogue of the ancient world survived because the scribes who erased it weren't thorough.
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