Word: uranium
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Dates: during 1930-1939
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...Uranium's Older Brother...
...mineral timepiece scientists have used uranium-lead, which is one of the "dead" end-products remaining after the radio-active element uranium has spent its ray energy...
Because they know how long it takes for uranium to "die," scientists can tell how old a deposit is from the proportion of live uranium and inactive uranium lead found side by side within it. Mineral deposits have been dated back nearly two billion years by means of the uranium-lead timepiece...
...Harvard finding concerns ordinary, or common, lead, which may be called the "older brother" of uranium lead. Ordinary lead is as old as earth itself, and was included in the molten mass of the earth before it cooled down...
...organs of healthy young dogs, like the organs of healthy young humans, are composed of cuboidal cells. These cells are vulnerable to alcohol, chloroform, uranium nitrate and other poisons. If the poisoning is slight, the destroyed cuboidal cells are promptly replaced. But if the poisoning is serious, peculiar flat cells repair the damage to liver and kidneys. Those flat cells withstand great amounts of intoxication, and possibly explain why mature men and women carry their liquor better than juveniles. "The mechanism which prevents poisons from injuring this type of cells is entirely unknown," said Dr. MacNider...