Science: Supercooled Blood

One of the mysteries of arctic life is how fish manage to survive in water so cold that their blood ought to freeze solid. In Hebron Fjord in Northern Labrador, the water at the bottom, 60 fathoms down, stays at — 1.0°C. (28.94° F.) winter and summer. There are plenty fish in it, leading active lives, but when their blood is extracted and chilled, it freezes at —.8° to —1.0° C., nearly a full degree above the temperature in which they live normally.

Last week an expedition led by Dr. Per F. Scholander of the...

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