Aerial exploration of the arid tableland surrounding Peru's Palpa valley has revealed a remarkable network of geometric and zoomorphic forms etched in the desert floor. Created by the Nazca, a pre-Incan civilization that flourished from about 200 BCE to about 600 CE, the Nazca Lines span about 200 sq mi (500 sq km). The glyphs are only recognizable as coherent figures from the air, but the Nazca never possessed the technology to view them from that vantage point. Why, then, did they create them?
Back in the day
Occupying the eastern portion of the great bulge of North Africa, Tunisia is bounded on the west by Algeria, on the north and east by the Mediterranean Sea, and on the southeast by Libya. In 1955, France granted Tunisia complete internal self-government, and full independence was negotiated in 1956. A year later, the monarchy was abolished and Tunisia became a republic. How many presidents has Tunisia had since gaining independence?
Born on a day like today
Eliot was an educator and the president of Harvard from 1869 to 1909. Under his administration, Harvard developed from a small college with attached professional schools into a great modern university. Several notable reforms were introduced during his tenure: the elective system was extended, the curriculum was enriched, written exams became mandatory, and the faculty was enlarged. Eliot opposed football and tried unsuccessfully to abolish the game at Harvard. Why did he object to the sport?