Benjamin Franklin was the first to actually chart and name the Gulf Stream
Franklin asked Timothy Folger, his cousin twice removed (Nantucket Historical Society), a Nantucket whaling captain, for an answer. Folger explained that merchant ships routinely crossed the then-unnamed Gulf Stream—identifying it by whale behavior, measurement of the water's temperature and the speed of bubbles on its surface, and changes in the water's color—while the mail packet captains ran against it.[4] Franklin worked with Folger and other experienced ship captains, learning enough to chart the Gulf Stream and giving it the name by which it is still known today. He offered this information to Anthony Todd, secretary of the British Post Office, but it was ignored by British sea captains.[4] @Curionic
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