Agroforestry represents a solution to land degradation by agriculture, but social barriers to wider application of agroforestry persist. More than half of all cropland in the USA is leased rather than owner-operated, and the short terms of most leases preclude agroforestry. Given insufficient research on tenure models appropriate for agroforestry in the USA, the primary objective of this study was to identify examples of farmers practicing agroforestry on land they do not own.

Compared to rural agriculture, urban agriculture (UA) has some distinct features (e.g., the limited land access, alternative growing media, unique legal environments or the non-production-related missions) that encourage the development of new practices, i.e., “novelties” or “innovations”. This paper aims to (1) identify the “triggers” for novelty production in UA; (2) characterize the different kinds of novelties applied in UA; (3) evaluate the “innovativeness” of those social, environmental and economic novelties; and, (4) estimate the links between novelties and sustainability.

In 2012, the Argentine government expropriated 51% of the shares of Yacimientos Petrolíferos Fiscales S.A. (YPF) from the Spanish company Repsol S.A. The YPF was nationalized without prior compensation, violating Argentina’s own laws and, consequently, the institutional framework in force in the country. As a consequence, the country’s reputation deteriorated and, although there were several contacts with multinational enterprises to become YPF’s new partner, the investment climate was affected, making it really difficult to attract Foreign Direct Investment (FDI).