Eighty-six degrees -- minimum. Eight knots of wind or fewer. If anyone understands the importance of pinpointing precise weather conditions, it's Diana Nyad and her 30-person crew.
Considered one of the best long-distance swimmers on the globe back when she was in her 20s, Nyad was just 28 when she endeavored -- and failed -- the dramatic 103-mile swim across the Gulf Stream from Havana, Cuba, to Key West, Fla.
The water temperature when Nyad's crew called her out of the ...
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