C. R. "Chuck" Downing
shared:
8/9/2017 1:05:07 AM
Reply#SciFact The average speed of the Gulf Stream is four mph (6.4 km/hr) @SherryFrazier https://t.co/O4zpGBPVRu
— C.R. Downing (@CRDowningAuthor) August 9, 2017