Volume 4: Saint Kitts And Nevis-Zimbabwe: -- Saint Kitts and Nevis -- Saint Lucia -- Saint Vincent and the Grenadines -- Sakharov, Andrei -- Samoa -- San Marino -- Sao Tome and Principe -- Saudi Arabia -- Savery, Thomas -- Senegal -- Serbia and Montenegro -- Seychelles -- Shell -- Ships -- Siemens, Ernst von -- Sierra Leone -- Singapore -- Slovakia -- Slovenia -- Smart grids -- Smeaton, John -- Solar concentrator -- Solar energy -- Solar thermal systems -- Solomon Islands -- Somalia -- South Africa -- South Carolina -- South Dakota -- Spain -- Sperry, Elmer -- Sri Lanka -- Standard Oil Company -- Standardization -- Stephenson, George -- Stirling, Robert -- Sudan -- Sulfur oxides -- Super power -- Suriname -- Sustainability -- Sustainable development -- Swaziland -- Sweden -- Switzerland -- Syria -- T: -- Tajikistan -- Tanzania -- Tarbell, Ida -- Taxation -- Tennessee -- Tennessee Valley Authority -- Tesla, Nikola -- Texas -- Thailand -- Thermal storage -- Thermochemistry -- Thermodynamics -- Thompson, Benjamin (Count Rumford) -- Thomson, Joseph John -- Thomson, William (Lord Kelvin) -- Three Gorges Dam -- Three Mile Island -- Tidal power -- Togo -- Tonga -- Total primary energy supply -- Townes, Charles Hard -- Trains -- Transportation -- Trevithick, Richard -- Trinidad and Tobago -- Tunisia -- Turkey -- Turkmenistan -- Tuvalu -- U: -- Uganda -- Ukraine -- United Arab Emirates -- United Kingdom -- United States -- Units of measurement -- Uranium -- Urban sprawl -- Uruguay -- Utah -- Utilities -- Uzbekistan -- V: -- Vanuatu -- Vegetable oil fuel -- Venezuela -- Vermont -- Vertical integration -- Vietnam -- Virginia -- Volatile organic compounds -- Volta, Alessandro -- W: -- War -- Washington State -- Waste heat recovery -- Waste incineration -- Water pollution -- Watt, James -- West Virginia -- Westinghouse, George -- Wheatstone, Charles -- Wind resources -- Wind technology -- Wisconsin -- Wood energy -- Work and energy -- World Commission on Environment and development -- Wyoming -- Y: -- Yemen -- Yucca Mountain -- Z: -- Zambia -- Zero-emissions vehicles -- Zimbabwe -- Chronology -- Glossary -- Resource guide -- Index.

This academic, multi-author reference work serves as a general and non-technical resource for students and teachers to understand the importance of energy; to appreciate the influence of energy on societies around the world; to learn the history of energy; and to initiate educational discussion brought forth by the specific social and topical articles presented in the work.