TV UNAM coverage as an over-the-air digital subchannel. TV UNAM is generally on the air daily from 8am to as early as midnight (longer on some nights, especially if there is a movie or concert scheduled). Although XHUNAM-TDT continues to operate on digital channel 20 in Mexico City, it has largely been used for experimental transmissions and does not broadcast the programming of TV UNAM. SPR's Mexico City station XHSPR-TDT carries it on channel 20.1. TV UNAM TV UNAM (stylized as "tvunam" and "tv•unam", formerly written "teveunam") is an educational television network owned and operated by the National Autonomous University of Mexico
Enrique Leff Enrique Leff Enrique Leff (born Mexico, 1946) is a Mexican economist, who defines himself today as an environmental sociologist and environmentalist. He has written 25 books and 180 articles on political ecology, environmental sociology, environmental economics, environmental epistemology and environmental education. He is regarded as one of the key environmental thinkers in Latin America. After a degree in chemical engineering from UNAM (Universidad Nacional Autónoma de México) in 1968. Leff graduated with a Doctorat de Troisième Cycle in development economics from the École Pratique des Hautes Études, Paris, in 1975. Leff lectured at UNAM (Universidad Nacional Autónoma de México) full-time