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Something from nothing: Physicists model vacuum tunneling in a 2D superfluid

In 1951, physicist Julian Schwinger theorized that by applying a uniform electrical field to a vacuum, electron-positron ...

Warming temperatures affect glaciers' ability to store meltwater, contributing to rising sea levels

In higher elevations, firn, frozen water that is something between snow and ice, covers the top of glaciers. Firn plays a ...