The article about appropriate technology (Amy Smith's work) is encouraging and praise-worthy. Thank you. There is a long-term effort in Cochabamba, Bolivia (more than 20 years now) which does similar things. Perhaps the D-Lab participants would be interested in it as well. It has introduced affordable meter-deep greenhousing in very high (Oruro area) altiplano communities; educational courses about seasons, irrigation, terracing, and reforestation in the Andes; carp pools and rabbit-raising experiments; and similar endeavors. This is all done with and for people of Inca descent who speak Quechua and Aymara. They live and farm land at the highest altitudes, and come to Cochabamba for short but focused live-in courses in science and appropriate technology,