Ancient Andean Agriculture Revived

Bruce Gellerman of member station WBUR reports from Bolivia on the rediscovery and revival of an ingenious irrigation system once used in the high Andean plain known as the Altiplano. The system helped support a population of 250,000 in an area where only a tenth as many have been able to scratch out a living in recent centuries. Gellerman reports on the successful first harvest under the revived system.