Paul Jozef Crutzen(Dutch pronunciation:[pʌulˈjoːzəfˈkrʏtsə(n)]; 3 December 1933 – 28 January 2021)was a Dutchmeteorologistandatmospheric chemist.In 1995, he was awarded theNobel Prize in ChemistryalongsideMario MolinaandFrank Sherwood Rowlandfor their work on atmospheric chemistry and specifically for his efforts in studying the formation and decomposition of atmospheric ozone. In addition to studying theozone layerandclimate change, he popularized the termAnthropoceneto describe a proposed new epoch in the Quaternary period when human actions have a drastic effect on the Earth. He was also amongst the first few scientists to introduce the idea of anuclear winterto describe the potential climatic effects stemming from large-scale atmospheric pollution including smoke from forest fires, industrial exhausts, and other sources like oil fires. He was a member of theRoyal Swedish Academy of Sciencesand an electedforeign member of the Royal Societyin the United Kingdom. Fields: Chemistry, physics