When human relatives first visited a green Arabian peninsula
Nicholas St. Fleur reports: Buried in the Arabian desert’s sand are clues to the peninsula’s wetter, greener past. Fossils from long-extinct elephants, antelope and jaguars paint a prehistoric scene not of a barren wasteland, but of a flourishing savanna sprinkled with watering holes. Now, scientists have found what they think is evidence of the activities of early human relatives, who lived in this ancient landscape some 300,000 to 500,000 years ago. If the findings are confirmed, the stone flakes and…