Noted oceanographer John Knauss dies aged 90
Scientist John Knauss, whose work is credited with highlighting the fragility of the world's oceans, has died aged 90.
His death was confirmed by the University of Rhode Island (URI), where he founded a graduate programme in oceanography.
The school said in a statement that Knauss died peacefully at his home in Saunderstown, Rhode Island, on November 19. No cause of death was given.
US senator Sheldon Whitehouse and URI President David Dooley said he played a pivotal role in underscoring the importance of the planet's seas.
Mr Whitehouse called him "a visionary leader and a brilliant scientist".
Knauss was a former administrator of the National Oceanic and Atmospheric Administration and also served as under-secretary for oceans and atmosphere in the US Commerce Department.
A memorial gathering is planned for December 5 in Narragansett.