The book is designated for those how are interested in geology and are eager to understand the meaning of landscapes and views, especially in desert areas where rock formations are well exposed, such as the Negev. The Negev lays at the south of Israel and is part of the sub tropical deserts strip. The Northern Negev is characterized by a series of elongated mountain chains, trending north-east. This mountain chains are asymmetric anticlines and are part of the Syrian Arc- a long geological structure that extends from the western Sinai Peninsula at the south, to the Syrian Palmira Mountains at the north. Five east- west long shear zones cross the central part of the Negev. A series of typical strike-slip related structures evolved along those dextral faults, such as domes, half domes, and pull- aparts . The Dead Sea Transform Fault bounds the Negev at the east; The international border with Egypt is the western border; The Gulf of Eilat (Aqaba golf) delineates the Negev at the south, and the Be'er Sheva Vvalley lays at its northern border. The Igneous rocks of the Precambrian Arabo - Nubian shield build the basement of the stratigraphic column. The Arabo -Nubian shield is composed of three rock complexes: The complex of the archaic metamorphic rocks, the magmatic complex, and the volcanic conglomeratic complex. A relatively thin, up to 1,200 m sedimentary rock sequence covers the basement at the south of the Negev, near Eilat. The sedimentary formations consistently become thicker and reach up to 5,000 m in the northern part of the Negev- about 200 km from Eilat. Among the unique geological phenomena of the Negev, one can count the Dead Sea Rift Valley, the three huge erosion- circuses ("Machteshim"), and the transversal creeks, which cross the anticlines from one side to the other. The book describes systematically each of the rock formations, their composition, and the environmental conditions at the time, as well as explains the natural processes that led to the formation of the landscape that we see today.

This is the first book-length study of the life and career of the Israeli chemist Ernst David Bergmann. It traces his birth and education in Germany; his decision, after the rise of Hitler, to immigrate to Palestine rather than to accept a position at Oxford; and his intimate 18-year association with Chaim Weizmann – not only as his closest scientific associate but also as Scientific Director of both the Sieff Institute and of the Weizmann Institute. Also described is his tragic falling out with Weizmann over the issue of the role of science in defense research, leading to his subsequent 18-year association with David Ben-Gurion as his personal science advisor and as Head of Scientific Research for the Israeli Defense Ministry, and to his pivotal role in the development of the Israeli atomic bomb. For the last 23 years of his life Bergmann also served as Professor of Organic Chemistry at the Hebrew University, where he trained a generation of Israeli chemists, as well as playing a key role in the organization of virtually every aspect of the present-day Israeli scientific community.

From the Critics: "...the boldness, coherence, and sweep of the book are impressive...Ofek has good and highly persuasive ideas about his main concern, which is the importance and centrality of economic analysis from an early point in human evolution...Second Nature is an exhilarating and interesting read that raises powerful questions about how humans got here and how we should be studied." Alan Grafen (Professor of Biological Sciences, Oxford University) Science “This is without a doubt one of the most important books to be published in the field of socio-economics in recent years. Ofek has done a superb job in linking what he calls Bioeconomics with Paleoeconomics to explain the transition from Homo Erectus to Homo Sapiens . . . . Briefly put, any reader would benefit from the wealth of new ideas that virtually jump out from almost each and every page.” Warren Young (Professor of Economics, Bar Ilan University) European Journal of Political Economy "Ofek synthesizes an enormous range of research on human origins to advance to the key role of exchange of goods and services in the evolution of distinctively human species.... This superb book seems poised to be a touchstone for work in prehistory and human origins for the foreseeable future; essential for all academic libraries; highly recommended for others." D. Bantz (University of Alaska) Choice "Ofek's book is, in fact, remarkable because it gives interesting, exhausting and insightful answers to old problems and, at the same time, it provides a new way to approach human evolution from the economic viewpoint." Joao Ricardo Faria (Professor of Economics, University of Texas) Economic History Network “Altogether this is a stimulating and well-done book. It’s even written better than most books involving either biology or anthropology. It seems to me that it should be the beginning of a major revamping of our views of the early history of our ancestors. Its interest to economists is of course particularly great, but I would hope that biologists and anthropologists will find it equally stimulating.” Gordon Tullock (economics and law professor at George Mason University) Journal of Bioeconomics

This is not an updated edition! Because of the many topics that appear in this book, it was decided to split the book into two parts, make corrections and more. You can now purchase the Second Edition: Understanding physics-mechanics I (earlier chapters from the first edition + corrections + chapter summaries) Understanding physics mechanics II (later chapters from the first edition + new chapter + corrections + chapter summaries).

The theory of evolution evolved in the last 200 years. The book presents, for the first time in Hebrew, a survey of the ideas brought forward by scientists about the origin and the diversity of the living world, from the 18th to the end of the 20th century. Every chapter focuses on one of these scientists, to illustrate the uniqueness of his ideas against the views prevalent at the time. The contributions of Georges Cuvier and Jean Baptiste Lamarck in France, and of Charles Lyell, Charles Darwin, Alfred Russel Wallace and Thomas Henry Huxley in England, are emphasized, as well as the opposition to Darwin's views expressed by Bishop Sam Wilberforce, the biologist George Mivart, and the engineer Fleeming Jenkin. The description of the first mutations in plants and the re-discovery of a paper by Gregor Mendel in 1900 began the era of genetics. The Dutch botanist Hugo de Vries suggested a theory of mutations which was enthusiastically endorsed by the geneticist Thomas Hunt Morgan when many "mendelian" mutations were discovered in his laboratory cultures of Drosophila. Genetic methods were employed in field studies of Drosophila by Theodosius Dobzhansky and his associates, and cooperation with Ernst Mayr yielded the genetic definition of the term species. Following the geneticists, mathematicians developed the theory of population genetics in evolution - R.A.Fisher, J. B. S.Haldane, and Sewall Wright. The combination of these models with Darwin's natural selection yielded the "Modern Synthesis " of the theory of evolution. Dissenting views of Richard Goldschmidt caused re-thinking about some established evolutionary principles.The introduction of electrophoretic and later molecular methods into field research on evolution in the mid-20th century caused a change in emphasis, giving more weight to random processes than to natural selection in evolution at the molecular level (The "neutrality" hypothesis of Motoo Kimura). The theory of evolution will no doubt continue to evolve in the future.

This book presents the foreign plants which originate in other countries and have become invaders in Israel.

The Truth of Scientific Medicine is an attempt to deal with one of the crucial problems in modern medicine: the rapid rate of exchange of truths serving as the foundation of medical practice. Unstable truths are a source of skepticism and concern among many physicians. They are also one of the main reasons for the crisis undermining the trust between patient and physician. The quest for the truth in modern medicine passes through the six core concepts of scientific truth: paradigms, methods, borders, criteria, interpretation and inference. The author deliberates each of these concepts through concrete examples at three levels: the historical, the theoretical and the political. The issues serving as the basis of the discussion are of concern to the medical world, and appear at the core of professional and sometimes the public debate: management of coronary heart disease, treatment of bronchial asthma, hormone replacement in menopausal women, early detection of breast cancer, drug therapy for diabetes, conventional vs. alternative medicine.

Organometallic chemistry that combines organic and non-organic, is an important field in chemistry that was especially developed in the last 10 years. This field greatly contributes to catalytic processes in the plastics industry and the production of medical and agricultural materials. Several Nobel prizes have been awarded to scientists dealing with this subject in the last few years. The book is organized by the periodic table. The subjects introduced in the chapters of this book are: organometallic compounds, Transition elements (arranged according to the ligands attached to them ), Catalysts and catalytic systems in polymerization or synthesis in coupling, metathesis or cyclization reactions. This book is intended for university and college students taking a course in the organometallic compound field.