catchers work in theory but have not succeeded as well in practice. This is due to the high expense of the nets and pipe, high maintenance costs and low quality of water. An alternative approach is that of the Seawater Greenhouse, which desalinates seawater inside a greenhouse, using evaporation and condensation powered by solar energy. Successful pilots have been conducted growing crops in desert locations. See also :Category:Water by country :Category:Water supply and sanitation by country Deficit irrigation Hubbert peak theory List of countries by ecological footprint List of environmental issues Saltwater intrusion Seawater greenhouse Virtual water Water cycle Water distribution on Earth Water pollution Water resources Water right Water security Other resource peaks Peak coal Peak copper Peak food Peak gas Peak gold Peak oil Peak phosphorus Peak soil Peak uranium Peak wheat References External links Google - public data "Improved water source (percent of population with access)" Google - public data "Renewable internal freshwater resources per capita (cubic meters)" Infographic: The Global Water Crisis Peak Water - myHydros.org | All About Water Peak Water: The Rise and Fall of Cheap, Clean H2O Bloomberg News "Peak Water: The Rise and Fall of Cheap, Clean Water. From February 2012. water "Drought" Water Conserve: Water Conservation Portal Water Information Guide - From Middletown Thrall Library. Subjects include: Drinking Water, Government Information, International Challenges and Efforts, Global Water Issues, Oceanography, Sea Levels, Desalination, Water Scarcity, Pollution and Contaminants, Conservation and Recycling, News and Special Reports, and library catalog subject headings for further research. Books Audio books Water and the environment Water Environmental issues with water Water conflicts Water scarcity