Drugs sold on the street or under casual circumstances for illicit use are often adulterated with less expensive drug or non-drug substances. Marijuana and mescaline sold as 100% pure have shown additives of a powerful animal tranquillizer (PCP) in analysis. Drug testing services in USA estimate that half of the drugs tested are either something else altogether or doctored with other substances. Alum (toxic) is sometimes added to heroin when cheap non-toxic substances such as quinine and lactose are not available. Under casual circumstances it is relatively easy for buyers to be deceived. They may be inexperienced and ignorant about drugs. Results of adulterated drugs may be relatively harmless in the instance of a 'bad trip', although even this may have long-term psychological repercussions. However, the user runs the risk of poisoning and in very severe cases perhaps even death.
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.