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James Lovelock n'a pas eu de chance avec l'hypothèse Gaïa. En nommant par ce vieux mythe grec le système fragile et complexe par lequel les phénomènes vivants modifient la Terre, on a cru qu'il parlait d'un organisme unique, d'un thermostat géant, voire d'une Providence divine. Rien n'était plus éloigné de sa tentative. Gaïa n'est pas le Globe, n'est pas la Terre-Mère, n'est pas une déesse païenne, mais elle n'est pas non plus la Nature, telle qu'on l'imagine depuis le XVIIe siècle, cette Nature qui sert de pendant à la subjectivité humaine. La Nature constituait l'arrière-plan de nos actions. Or, à cause des effets imprévus de l'histoire humaine, ce que nous regroupions sous le nom de Nature quitte l'arrière-plan et monte sur scène. L'air, les océans, les glaciers, le climat, les sols, tout ce que nous avons rendu instable, interagit avec nous. Nous sommes entrés dans la géohistoire. C'est l'époque de l'Anthropocène. Avec le risque d'une guerre de tous contre tous. L'ancienne Nature disparaît et laisse la place à un être dont il est difficile de prévoir les manifestations. Cet être, loin d'être stable et rassurant, semble constitué d'un ensemble de boucles de rétroactions en perpétuel bouleversement. Gaïa est le nom qui lui convient le mieux. En explorant les mille figures de Gaïa, on peut déplier tout ce que la notion de Nature avait confondu : une éthique, une politique, une étrange conception des sciences et, surtout, une économie et même une théologie.

Gaia hypothesis. --- Climatic changes --- Philosophy.

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Exploring the broad implications of evolutionary theorist Lynn Margulis’s work, this collection brings together specialists across a range of disciplines, from paleontology, molecular biology, evolutionary theory, and geobiology to developmental systems theory, archaeology, history of science, cultural science studies, and literature and science. Addressing the multiple themes that animated Margulis’s science, the essays within take up, variously, astrobiology and the origin of life, ecology and symbiosis from the microbial to the planetary scale, the coupled interactions of earthly environments and evolving life in Gaia theory and earth system science, and the connections of these newer scientific ideas to cultural and creative productions.Dorion Sagan acquaints the reader with salient issues in Lynn Margulis’s scientific work, the controversies they raised, and the vocabulary necessary to follow the arguments. Sankar Chatterjee synthesizes several strands of current theory for the origin of life on earth. James Strick tells the intertwined origin stories of James Lovelock’s Gaia hypothesis and Margulis’s serial endosymbiosis theory. Jan Sapp explores the distinct phylogenetic visions of Margulis and Carl Woese. Susan Squier examines the epigenetics of embryologist and developmental biologist C. H. Waddington. Bruce Clarke studies the convergence of ecosystem ecology, systems theory, and science fiction between the 1960s and the 1980s. James Shapiro discusses the genome evolution that results not from random changes but rather from active cell processes. Susan Oyama shows how the concept of development balances an over-emphasis on genetic coding and other deterministic schemas. Christopher Witmore studies the ways in which a concentrated animal feeding operation, or CAFO, mixes up natural resources, animal lives, and human appetites. And Peter Westbroek brings the insights of earth system science toward a new worldview essential for a proper response to global change.

Evolution (Biology) --- Biodiversity. --- Gaia hypothesis. --- Convergence (Biology) --- Philosophy. --- Biology. --- Earth Sciences. --- Ecosystems. --- Evolution. --- Gaia Theory. --- Lynn Margulis. --- Microbes. --- Symbiosis. --- Systems Theory. --- ecology.

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This book is the comprehensive volume of the TAIGA ("a great river" in Japanese) project. Supported by the Japanese government, the project examined the hypothesis that the subseafloor fluid advection system (subseafloor TAIGA) can be categorized into four types, TAIGAs of sulfur, hydrogen, carbon (methane), and iron, according to the most dominant reducing substance, and the chemolithoautotrophic bacteria/archaea that are inextricably associated with respective types of TAIGAs which are strongly affected by their geological background such as surrounding host rocks and tectonic settings. Sub-seafloor ecosystems are sustained by hydrothermal circulation or TAIGA that carry chemical energy to the chemosynthetic microbes living in an extreme environment. The results of the project have been summarized comprehensively in 50 chapters, and this book provides an overall introduction and relevant topics on the mid-ocean ridge system of the Indian Ocean and on the arc-backarc systems of the Southern Mariana Trough and Okinawa Trough. --Provided by publisher

Earth Sciences. --- Biogeosciences. --- Oceanography. --- Geochemistry. --- Geography. --- Life sciences. --- Géographie --- Sciences de la vie --- Géochimie --- Océanographie --- Hydrothermal vent ecology --- Biogeochemistry --- Biosphere --- Marine geophysics --- Biology --- Health & Biological Sciences --- Biology - General --- Biosphere. --- Nature --- Effect of human beings on. --- Anthropogenic effects on nature --- Ecological footprint --- Earth sciences. --- Geobiology. --- Human beings --- Anthropogenic soils --- Human ecology --- Life (Biology) --- Planets --- Gaia hypothesis --- Geobiology --- Chemical composition of the earth --- Chemical geology --- Geological chemistry --- Geology, Chemical --- Chemistry --- Earth sciences --- Oceanography, Physical --- Oceanology --- Physical oceanography --- Thalassography --- Marine sciences --- Ocean --- Engineering. --- Applied psychology. --- Commercial law. --- Automotive Engineering. --- Robotics and Automation. --- Community and Environmental Psychology. --- Commercial Law. --- Business --- Business law --- Commerce --- Law, Commercial --- Mercantile law --- Law --- Law merchant --- Maritime law --- Applied psychology --- Psychagogy --- Psychology, Practical --- Social psychotechnics --- Psychology --- Construction --- Industrial arts --- Technology --- Law and legislation