Aristotles Ladder Darwins Tree

Leading paleontologist David Archibald explores the rich history of visual metaphors for biological order from ancient times to the present and their influence on human beingsÕ perception of their place in nature. Specifically, Archibald focuses on ladders and trees, and the first appearance of trees to represent seasonal life cycles. Their use in ancient Roman decorations and genealogies was then appropriated by the early Christian Church to represent biblical genealogies. The late eighteenth century saw the idea of a tree reappropriated to visualize relationships in the natural world, sometimes with a creationist view, but in some instances suggesting evolution. Charles DarwinÕs On the Origin of Species (1859) exorcised the exclusively creationist view of the Òtree of life.Ó His ideas sparked an explosion of trees, mostly by younger acolytes in Europe. Although DarwinÕs influence waned in the early twentieth century, by midcentury his ideas held sway once again in time for another and even greater explosion of tree building, generated by the development of new theories on how to assemble trees, the birth of powerful computing, and the emergence of molecular technology. Throughout his far-reaching study, and with the use of many figures, Archibald connects the evolution of Òtree of lifeÓ iconography to our changing perception of the world and ourselves, offering uncommon insight into how we went from standing on the top rung of the biological ladder to embodying just one tiny twig on the tree of life.

Historical biogeography—the study of the history of species through both time and place—first convinced Charles Darwin of evolution. This field was so important to Darwin’s initial theories and line of thinking that he said as much in the very first paragraph of On the Origin of Species (1859) and later in his autobiography. His methods included collecting mammalian fossils in South America clearly related to living forms, tracing the geographical distributions of living species across South America, and sampling peculiar fauna of the geologically young Galápagos Archipelago that showed evident affinities to South American forms. Over the years, Darwin collected other evidence in support of evolution, but his historical biogeographical arguments remained paramount, so much so that he devotes three full chapters to this topic in On the Origin of Species. Discussions of Darwin’s landmark book too often give scant attention to this wealth of evidence, and we still do not fully appreciate its significance in Darwin’s thinking. In Origins of Darwin’s Evolution, J. David Archibald explores this lapse, showing how Darwin first came to the conclusion that, instead of various centers of creation, species had evolved in different regions throughout the world. He also shows that Darwin’s other early passion—geology—proved a more elusive corroboration of evolution. On the Origin of Species has only one chapter dedicated to the rock and fossil record, as it then appeared too incomplete for Darwin’s evidentiary standards. Carefully retracing Darwin’s gathering of evidence and the evolution of his thinking, Origins of Darwin’s Evolution achieves a new understanding of how Darwin crafted his transformative theory.

Darwin's theory of evolution remains controversial, even though most scientists, philosophers, and even theologians accept it, in some form, as an explanation for the variety of organisms. The controversy erupts when the theory is used to try to explain everything, including every aspect of human life, and to deny the role of a Creator or a purpose to life. The overreaching of many scientists into matters beyond the self-imposed limits of scientific method is perhaps explained in part by the loss of two important ideas in modern thinking--final causality or purpose, and formal causality. Scientists understandably bracket the idea out of their scientific thinking because they seek explanations on the level of material and efficient causes only. Yet many of them wrongly conclude from their selective study of the world that final and formal causes do not exist at all and that they have no place in the rational study of life. Likewise, many erroneously assume that philosophy cannot draw upon scientific findings, in light of final and formal causality, to better understand the world and man. The great philosopher and historian of philosophy, Etienne Gilson, sets out to show that final causality or purposiveness and formal causality are principles for those who think hard and carefully about the world, including the world of biology. Gilson insists that a completely rational understanding of organisms and biological systems requires the philosophical notion of teleology, the idea that certain kinds of things exist and have ends or purposes the fulfillment of which are linked to their natures--in other words, formal and final causes. His approach relies on philosophical reflection on the facts of science, not upon theology or an appeal to religious authorities such as the Church or the Bible.

From Aristotle to Darwin, from ancient teleology to contemporary genealogies, this book offers an overview of the birth and then persistence of Aristotle's framework into modernity, until its radical overthrow by the evolutionary revolution.

A fresh account of Charles Darwin’s rich personal and professional lives, well beyond On the Origin of Species. In 1859 Charles Darwin published On the Origin of Species. With this bedrock of biology books, Darwin carved a new origin-story for all life: evolution rather than creation. But this single book is not the whole story. In this new biography, J. David Archibald describes and analyzes Darwin’s prodigious body of work and complex relationships with colleagues, as well as his equally productive home life—he lived with his wife and seven surviving children in the bustling environs of Down House, south of London. There, among his family and friends, Darwin continued to experiment and write many more books on orchids, sex, emotions, and earthworms until his death in 1882, when he was honored with burial at Westminster Abbey. This is a fresh, up-to-date account of the life and work of a most remarkable man.

Stiffener card which came inside a first day cover envelope issued by the Royal Mail Group Ltd. on Thursday, 12th February 2009 to commemorate the 200th anniversary of the birth of Charles Darwin. It has a reproduction of Darwin's 'tree of life' diagram.

Featuring stunning illustrations from Margaux Carpentier, learn about Charles Darwin, his "Tree of Life," and the wonderful ways plants and animals have evolved over time—the perfect book for curious kids. From the first living things six billion years ago to the animals living around the world today, explore how the huge diversity of the life on Earth came to be. Follow the branches of Charles Darwin’s “Tree of Life” and discover how plants and animals have evolved in many amazing ways. Find out why crabs run sideways, which fish was the first to walk on land, why birds are similar to dinosaurs, and why brains are located in our heads and not in our feet. The book is stunningly illustrated by Margaux Carpentier in a bright and bold distinctive style.

This study identifies the fall of dinosaurs as the factor that allowed mammals to evolve into the dominant tetrapod form. It refutes the single-cause impact theory for dinosaur extinction and demonstrates that multiple factors--massive volcanic eruptions, loss of shallow seas, and extraterrestrial impact--likely led to their demise. While their avian relatives ultimately survived and thrived, terrestrial dinosaurs did not. Taking their place as the dominant land and sea tetrapods were mammals, whose radiation was explosive following nonavian dinosaur extinction. The author argues that because of dinosaurs, Mesozoic mammals changed relatively slowly for 145 million years compared to the prodigious Cenozoic radiation that followed. Finally out from under the shadow of the giant reptiles, Cenozoic mammals evolved into the forms we recognize today in a mere ten million years after dinosaur extinction.