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PhysicsA newfound superconducting current travels only along a material’s edge
In a first, scientists spot electricity flowing without resistance on the rim of a topological superconductor.
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EarthGreenland and Antarctica are gaining ice inland, but still losing it overall
Inland ice accumulation is not enough to counteract the amount of ice melting off Antarctica and Greenland into the oceans, satellite data show.
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AstronomyThe sun is less magnetically active than similar stars, and we don’t know why
Why our star seems so different from its stellar kin is a mystery.
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Anthropology16th century skeletons suggest the slave trade brought some diseases to Mexico
Slaves buried in a 16th century grave in Mexico had hepatitis B and yaws, suggesting the slave trade helped spread some versions of those diseases.