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Show SCIENCE SKETCHES CRYOBIOLOGY is a new field in which scientists are looking for ways to use cold for man's benefit. It's a combination of cryogenics (extreme-, low-temperature physics) and biology. Already achieved is the freezing freez-ing of cells to preserve them alive and unchanged indefinitely. Some day it may be possible to freeze a man solid, put him in cold storage and take him out hundreds of years later to start living again in exactly the same condition as when he entered the deep freeze. CRYOGENIC LIQUIDS so cold 3 they make most metals brittle can I e handled safely with special ightweight 'Tube-Turn" welding fittings made of high-strength iluminum alloy. The fittings carry jquid helium, at 452 degrees be-ow be-ow zero F. the coldest substance cnown, in research laboratories A WITCHWEED HUNT is on in the Carolinas. The parasite, discovered discov-ered in 1956, attacks corn, sugar cane, sorghum, grasses, sedges ' and some broadleafed plants, advises ad-vises the U.S. Dept. of Agriculture. Herbicides have been sprayed on 450,000 acres. |