Swinging abyss: Oxygen isotope analysis shows less dynamic Antarctic ice sheet in Oligocene period

Oxygen isotopes data enable researchers to look far back into the geologic past and reconstruct the climate of the past. In ...
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Shell model of the nucleus

Physicists Maria Goeppert Mayer and J. Hans D. Jensen develop a theory of the nucleus as composed of shells of protons and neutrons. It explains why nuclei ...