The International Society ofSoil Science was organized in 1924 and the 1st International Congress ofthe Society was held in Washington, D. C. , United States ofAmerica, in 1927. The 14th Congress was held August 12-18, 1990 in Kyoto, Japan. Dr. Akira Tanaka, Society President, stated "It is a serious concernofpeopleintheworldtosustainhighfarming productivityfor feeding the ever growing population,and also to protect the environment for human habitation. For this purpose, it is necessary to maximize crop yield per unit field areathroughintensivemanagementofthesoilandcropsonlands which are best suited for crop production, and to leave lands which are suboptimal for crops under natural conditions insofar as possible. Soil science is respon- siblefor planningtheoptimumland-usesystem,for managing soilsand crops with maximum efficiency, and for fighting intelligently against soil deteriora- tion. " Dr. Tanaka clearly stated the challenges facing soil scientists, and they are indeed challenges. Even though the rate ofworld population growth has decreased somewhat in recent years, the consensus is that total population willdouble-to some ten billion-beforeit stabilizes. The increased produc- tion of food, fiber, and fuelwood necessary for the people will require a continued supply ofnew technologies and management practices. The consensus of many scientists is that the greatest challenge is not increasing production, but preventing serious deterioration of the soil and waterresource base so theproductionlevel can be sustained. Therearemany historical examples where civilizations were successful for extended periods onlytoseesoildegradationleadtotheircollapse.

Emulsion polymerization below critical micellar concentration is a hidden and visionary area of polymer science and chemical engineering. An analysis is done between styrene and vinyl acetate. Various variables like initiator concentration, surfactant concentration and agitator speeds are investigated. A deep understanding of emulsion polymerization and polymer science will mesmerize the readers interested in details.

Disposal of hazardous material to a landfill involves the use of liner. The liner prevents toxic leachate permeating down into the underlying aquifers or nearby rivers The primary purpose of the liner system is to isolate the landfill contents from the environment and, therefore, to protect the soil and ground water from pollution originating in the landfill. The lining of a landfill has a crucial role in preventing the waste escaping into and contaminating the soil and water around the site. There may be chemicals or unpleasant substances in the waste that need to be kept within the sealed area. Clay is used as essential materials for reducing the permeability of natural clay liners in landfill sites.Low porosity, slow diffusive transport, high adsorption of cations, and plasticity / swelling is among the interesting properties of clay. "Natural Clay as Liner Material for the Waste Landfill" provides a summary of recent information about the use of natural clay as liner material. The book is valuable for a diversity of applications in soil pollution.