National Autonomous University of Mexico several locations across Mexico (in Santiago de Querétaro, Morelia, Mérida, Sisal, Ensenada, Cuernavaca, Temixco and Leon), mainly aimed at research and graduate studies. Its Center of Teaching for Foreigners has a campus in Taxco, in the southern Mexican state of Guerrero, focusing in Spanish language and Mexican culture for foreigners, as well as locations in the upscale neighborhood of [Polanco] in central Mexico City. The University has extension schools in the United States, and Canada, focusing on the Spanish language, English language, Mexican culture, and, in the case of UNAM Canada, French language: UNAM San Antonio, Texas; UNAM Los Angeles,
Enrique Leff etc. 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)