National Geographic : 1956 Mar
Venezuelan Children Mob a "Grasshopper" Within a 180-mile-wide circle near Ciudad Bolivar, the Vene zuelan Government and IAGS are spending $1,000,000 on a project to find out, as one ob server put it, "which way is down." Scientists are studying the force of gravity at thou sands of sites around the center of the circle-the "datum point." Object: to eliminate the error in geodetic surveying caused by anomalies-the fact that irregularities in the earth's crust deflect gravity. This fixed point may help es tablish positions all over South America. Accustomed to airplanes, In dian villagers still get a thrill out of helicopters, which they sometimes call grasshoppers. This landing disrupted life in Magagua (population about 90).