Great share of rented land in total utilised area as well as a significant variability of land rent and market prices of land causes a need of research that would assess which factors influence the land rent as well as the price of land and how significant such factor are in each state.

This article solves and characterizes optimal decision rules to invest in irreversible land improvements conditional on land tenure insecurity. Economic model is a normative dynamic programming model with known parameters for the one period returns and transition equations.

In this issue of the NR Newsletter, we welcome 2012 as the UN-declared International Year of Energy for All, an opportunity to concentrate global attention on the challenges facing both developed and developing countries when addressing access to and efficient use of sustainable energy sources.

FAO (Food and Agriculture Organization of the United Nations) and other development partners are working together with countries to prepare Voluntary Guidelines that will provide practical guidance to states, civil society, the private sector, donors and development specialists on the responsible