Word: tunneling
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...South Viet Nam as the frequent battle communique: "Initial contact was light." In order to engage the Viet Cong, Americans and South Vietnamese have stepped up their "search and clear" thrusts into Communist-held territory, using flame throwers, gas and explosives to flush the Viet Cong from their tunnels, leveling whole forest areas to chop snipers from the trees. Turning the tables, crack Marine sharpshooters are now carrying hunting rifles equipped with telescopic sights able to zero in on guerrillas from afar. B-52s have begun making tandem runs over Viet Cong tunnel areas, first with deep-penetration bombs that...
...Muscle Tunnel. Research surgical teams from two major medical centers told the College of Cardiology about new techniques based on the Vineberg principle but using different vessels to carry blood to the heart muscle. Cleveland's Dr. Earle B. Kay reported that he and Dr. Akio Suzuki cut out a piece of the left lung's arterial network with "a multitude of side branches," and sew the "trunk" end into the descending aorta. Then they implant the smaller branches in the heart muscle. The advantage of this method, which has so far been successful in four...
Universal Timetable. Fascinated by his initial calculation, Cooper worked out a formula for the time required for an object to fall through a straight-line tunnel bored between any two points on the surface of the earth. Surprisingly, no matter how close or far apart the two points were, the time turned out to be constant: 42.2 minutes...
Gravity-Powered Travel. To be sure, some formidable obstacles would have to be overcome before his scheme could become reality. At its midpoint, a Washington-Boston tunnel would be five miles below the surface of the eartha technically difficult and prohibitively costly bit of construction. In addition., the subterranean temperature at a five-mile depth might be as high as 265° F., and a passenger vehicle would need an immense cooling system. Finally, because a perfect vacuum could not be created within the tunnel, and because the vehicle would probably have to ride on some sort of rail, friction...
Cooper has let his imagination soar even farther. Using different radii and gravitational forces in his formulas, he has laid out the mathematical groundwork for extraterrestrial travel networks. According to his calculations, straight-line tunnel travel between any two surface locations would be 53 minutes on the moon, 49 on Mars...