the same symbol is also used for a unit of length (the first Bohr radius) for a unit of electric moment and, in quantum field theory, for a quite different energy. To compound the confusion ...

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a sun-like star, ...

This advertisement has not loaded yet, but your article continues below. The salmon are quickly returning to spawn in cool creeks that have been cut off to them for generations Researchers at ...

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