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While the Mexican expedition will make its most important observations in 3 minutes, the Aerobee rocket project will have only 3 seconds to photograph the chromosphere before the moon covers up that narrow layer...
...Harvard College Observalory, will arrive at NASA's missile range on Wallop's Island, Virginia next week. Edmond M. Reeves and William H. Parkinson, lecturers on Astronomy, are participating in the joint Canadian-British American rocket project that will observe the sun's chromosphere-a thin, outer layer of the sun that is distinguishable only during an eclipsc...
...puzzle. Refining a rough idea suggested a generation earlier, Hess proposed that the earth's mantle is really a giant convection system. Like hot air in a room, he suggested, material heated by radioactive elements in the earth's interior slowly rises out of a relatively fluid layer of the earth's mantle called the asthenosphere. This lava surfaces at the mid-ocean ridges; hence, the higher water temperatures. As it flows away from the ridges, it hardens into a more rigid layer called the lithosphere. When new lava oozes out, it attaches itself to the older...
...from tankers flushing their storage compartments at sea. That, along with other everyday mishaps, adds up to 284 million gallons of spilled oil every year-about ten times the amount that oozed from the Torrey Canyon, and enough to coat a beach 20 ft. wide with a half-inch layer of oil for 8,633 miles. Scientists are increasingly worried that this oil could be poisonous to ocean plankton, a key source of photosynthesis that produces most of the earth's oxygen...
Here and there the floods left a boon. On the Kairouan plain, 80 miles south of Tunis, a three-foot layer of soil was washed away, uncovering a sizable Roman village. Inland lakes eight miles wide were created by rainfalls of 16 inches in 24 hours. The lakes are now draining down to raise the water table, and farmers are assured of at least four years of well-watered soil. Most important, the rains that battered 80% of Tunisia bypassed coastal resort areas whose hotels account for $40 million in tourist revenues annually. Even so, cancellations already total...