Alternative Energy introduces researchers to issues surrounding both current energy sources and alternative energy options. While there is significant discussion of the non-renewable resources now used to meet the majority of the world's energy needs (oil, coal and natural gas), the primary focus of the set is on newer options to meet the ever-growing demand. These options include wind and solar energy, fuel cells, hydropower, geothermal power and biomass energy. In addition, more theoretical sources are also explored, including cold fusion, zero point energy and universal forces.
This book is the result of twenty years of puzzle collecting. For these many years I have endeavored to gather everything belonging to the realm of mathematical entertainment from all available sources. As an editor of newspaper columns on scientific entertainment, I found my readers keenly interested in this kind of pastime, and these readers proved to be among my best sources for all sorts of problems, both elementary and intricate.
A prolific writer, bestselling novelist, and world-renowned philosopher, Ayn Rand defined a full system of thought--from epistemology to aesthetics. Her writing is so extensive and the range of issues she covers so enormous that those interested in finding her discussions of a given topic may have to search through many sources to locate the relevant passage. THE AYN RAND LEXICON brings together all the key ideas of her philosophy of Objectivism.
Trade and Exchange - Archaeological Studies from History and Prehistory
Long before the advent of the global economy, foreign goods were transported, traded, and exchanged through myriad means, over short and long distances. Archaeological tools for identifying foreign objects, such as provenance studies, stylistic analyses, and economic documentary sources reveal non-local materials in historic and prehistoric assemblages.
In this dictionary, "modern" is defined as 20th century; thus, entries are quotes originating from people alive after 1900. If the speaker was also quotable before 1900, those remarks are included as well. Using the same format as The Ox. Dictionary of Quotations (Oxford Univ. Pr., 1979. 3d ed.), this book consists of some 5000 quotations from a wide range of sources: arrangement is alphabetical by the names of the authors, and each quotation includes a reference to a printed source. Better version added Thanks to lanagreg
