Philip Abelson
![Philip Abelson](https://upload.wikimedia.org/wikipedia/commons/6/6b/Phillip_H._Abelson_450901-N-NO204-0001.jpg)
Abelson served as editor-in-chief of the journal ''Science'' from 1962–84, president of the Carnegie Institution of Washington from 1971–78, and president of the American Geophysical Union from 1972-74. His frequent editorials in ''Science'', both during and after his term as editor, became known for their strident and thought-provoking views. A collection of 100 of his editorials was published as a book, entitled ''Enough of Pessimism''. He may have been the original source of the phrase 'extraordinary claims require extraordinary evidence'. Provided by Wikipedia
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