Word: layers
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Dates: during 1950-1959
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Some unknown force must support the bulges, which could not exist if the earth were a simple, spinning mass of plastic material. One possibility: the earth's mantle (the 1,800-mile layer below the crust) may not be as plastic as has been thought. It may have mechanical strength, like brickwork, that keeps the earth out of shape. Another possibility: the bulges are supported by slow currents in the mantle, which push up the surface like massive bubbles in a spring...
...breaking out of a crevice. Physicist J. H. Fremlin of the University of Birmingham, England theorized in this week's Nature that if the bottoms of lunar craters are deeply covered with dust, as many astronomers think, they are likely places for gas eruptions. The dust layer, says Fremlin, would be a good heat insulator. It would trap under the crater's floor the heat generated by radioactivity in the moon's rock. Many times in a million years the rock might get hot enough to spew out some...
...worked at the distance (4,660 miles) at which the Lunik swept past the moon, but they would be grateful for any information that the Russians choose to release. Dr. Kuiper believes that the moon's surface is blazing with radioactivity. On the earth, he says, the thick layer of air is the shielding equivalent of 3 ft. of lead or 33 ft. of water, protects the surface from many kinds of tough radiation beating down from space. Kuiper believes that the moon is radioactively contaminated to a depth of 30 ft. below the surface...
...educational standards if Russia were inhabited solely by musk oxen, Gould does not hesitate to point with alarm at the Red satellites long after the furor has ceased to be fashionable. Typically, he orates: "We are like penguins wrapped in blubber. We have wrapped ourselves in such a layer of luxury we are virtually impervious to what goes on in the world around us. We may be unable to wake up in time to meet the crisis that Sputnik graphically posed...
...diverticulum (Latin for a small bypath) of the large bowel is a little pouch or sac formed by pressure inside the gut, forcing the inner layer (mucosa) through a weak spot in the outer, muscular layers. It may be no bigger than a BB shot, or it may be the size of a plum with a stalklike neck. If the neck is extremely narrow, fecal matter forced into the diverticulum will stay there, setting up an ever-present threat of infection and making the condition harder to detect since the barium used to get X-ray contrast may not penetrate...