. "1941-03-29Z"^^ . . "American physicist" . "James Edward Hansen"@en . . . . . . . . "Hansen, James"@en . . "1941Z"^^ . . "James Hansen"@en . "James Edward Hansen (born March 29, 1941) is an American adjunct professor in the Department of Earth and Environmental Sciences at Columbia University. Hansen is best known for his research in the field of climatology, his testimony on climate change to congressional committees in 1988 that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change."@en . . . .