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Paul J. Crutzen, Nobel laureate who studied ozone and named new ‘Anthropocene’ era, dies at 87 Harrison Smith © Eric Roxfelt/AP Dutch atmospheric chemist Paul J. Crutzen, left, receives the 1995 Nobel Prize in chemistry from Swedish King Carl XVI Gustaf. Paul J. Crutzen, a Nobel-winning chemist who revealed threats to the ozone layer, developed the concept of “nuclear winter” and concluded that humans were having such a profound impact on the planet that it was time to recognize a new geological epoch the Anthropocene died Jan. 28 at a hospital in Mainz, Germany. He was 87. His death was announced by the Max Planck Institute for Chemistry in Mainz, where Dr. Crutzen directed the atmospheric chemistry department from 1980 until retiring in 2000. A spokeswoman for the institute, Susanne Benner, said he “suffered from several years of illness” but did not specify the cause.

United kingdomNoord hollandAndrew revkinFrank sherwood rowlandTerttu soininenChristian schwMarioj molinaMario molinaFred pearceJohn birksPaulj crutzenPaul crutzenRobert lucas jrSusanne bennerF sherwood rowlandKarl schoendorfer shutterstock