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Detailed explanation-1: -Wallace “Wally” Smith Broecker (November 29, 1931 – February 18, 2019) was an American geochemist.

Detailed explanation-2: -He was 87. The cause was congestive heart failure, said his family. His death was confirmed by Columbia University’s Lamont-Doherty Earth Observatory, where he spent a career that spanned nearly 67 years.

Detailed explanation-3: -Broecker. To his colleagues, peers and admirers he is a genius and a pioneer, the Grandfather of Climate Science. And to his countless friends – most of whom also happen to be colleagues, peers and admirers – he is simply Wally.

Detailed explanation-4: -In 1896, a seminal paper by Swedish scientist Svante Arrhenius first predicted that changes in atmospheric carbon dioxide levels could substantially alter the surface temperature through the greenhouse effect. In 1938, Guy Callendar connected carbon dioxide increases in Earth’s atmosphere to global warming.

Detailed explanation-5: -The term “global warming,” which describes an increase in the Earth’s average temperature surface due to greenhouse gas emissions, is widely believed to have been coined in 1975 by Columbia University geochemist Wallace Broecker, according to NASA.