Key findings:

Since 2010, the world has added more solar photovoltaic (PV) capacity than in the previous four decades. Total global capacity overtook 150 gigawatts (GW) in early 2014

The geographical pattern of deployment is rapidly changing. While a few European countries, led by Germany and Italy, initiated large-scale PV development, since 2013, the People’s Republic of China has led the global PV market, followed by Japan and the United States

PV system prices have been divided by three in six years in most markets, while module prices have been divided by five

The present report was prepared in response to General Assembly resolution 64/205, in which the Assembly requested the Secretary-General to report to it at its sixty-sixth session on the status of sustainable development in mountain regions.

This guideline describes the way in which Bayesian networks can be used to facilitate water resource decision making and improve the stakeholder engagement process. To reverse the water shortage and scarcity due to the variable and climate changing, the experience of four case studies (United Kingdom, Spain, Denmark and Italy) show clearly that the Bns can permits to assess impacts of many different strategies and / or scenarios to be assessed in a short time and different scale of water management can be addressed simultaneously.