Kennet has a PhD from Victoria University of Wellington, with a thesis on the Kapitean Stage in New Zealand.[2] In 1986, Kennett became the founding editor of Paleoceanography,[3][4][5] and in May 2000, he was elected as a member of the National Academy of Sciences.[6][7] He is also a cofounder and member of the Comet Research Group (CRG).[8] He is widely known for his contributions to the controversial and disputed Younger Dryas impact hypothesis which asserts that the Clovis culture was destroyed by a shower of comets, an idea that has been refuted.[9] His most widely disseminated paper was a collaboration with biblical archaeologists who believe they have discovered the ancient city of Sodom at Tell el-Hammam, Jordon, and that it was destroyed by a comet.[10] On February 15, 2023, the following editor’s note was posted on this paper, "Readers are alerted that concerns raised about the data presented and the conclusions of this article are being considered by the Editors. A further editorial response will follow the resolution of these issues."[11]
^"Brief History". University of California, Santa Barbara. Archived from the original on 12 January 2022. Retrieved 13 January 2022. Kennett is considered a pioneer in developing paleoceanography as a new field and was founding editor of Paleoceanography.