James W. Cronin (1931–2016)

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Science  30 Sep 2016:
Vol. 353, Issue 6307, pp. 1501
DOI: 10.1126/science.aaj2021

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James W. Cronin, who shared the Nobel Prize for Physics in 1980 with Val L. Fitch for the discovery of an unexpected breakdown in the symmetries of charge (C) and parity (P), died on 25 August 2016. Their work help explain the conundrum as to why there is more matter than antimatter in the universe. An outstanding experimentalist and gifted data analyst, Cronin's talents led to major discoveries in the fields of particle and cosmic-ray physics.