Landfill is the oldest and the most widely practised method of disposing of solid waste. Properly constructed and operated landfill sites offer a completely safe disposal route for municipal solid wastes, typically at the lowest cost compared to other disposal options. It is not necessary on health or environmental grounds to invest in other disposal methods if suitable sites are available for landfills. Uncontrolled dumping of waste, which does not protect the local environment, however, should be replaced as soon as possible with controlled sanitary landfilling or other treatment and disposal methods. Most alternative waste treatment and disposal options, such as recycling or incineration, rely on landfill for the disposal of wastes that are unsuited to the process, as well as for the process residues. Some landfill capacity is therefore indispensable for every region, and will continue to be necessary in the foreseeable future, despite any technological advances which may be made.
The Encyclopedia of World Problems and Human Potential is a collaboration between UIA and Mankind 2000, started in 1972. It is the result of an ambitious effort to collect and present information on the problems with which humanity is confronted, as well as the challenges such problems pose to concept formation, values and development strategies. Problems included are those identified in international periodicals but especially in the documents of some 60,000 international non-profit organizations, profiled in the Yearbook of International Organizations.
The Encyclopedia includes problems which such groups choose to perceive and act upon, whether or not their existence is denied by others claiming greater expertise. Indeed such claims and counter-claims figure in many of the problem descriptions in order to reflect the often paralyzing dynamics of international debate. In the light of the interdependence demonstrated among world problems in every sector, emphasis is placed on the need for approaches which are sufficiently complex to encompass the factions, conflicts and rival worldviews that undermine collective initiative towards a promising future.
Non-profit, apolitical, independent, and non-governmental in nature, the UIA has been a pioneer in the research, monitoring and provision of information on international organizations, international associations and their global challenges since 1907.