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Water --- Biomolecules --- Life (Biology) --- Water chemistry

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Medicine. --- Biology. --- Life sciences --- Biomass --- Life (Biology) --- Natural history --- Health Workforce

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Biology --- Biology. --- negative results --- secondary results --- biology --- biomedicine --- Life sciences --- Biomass --- Life (Biology) --- Natural history --- Biology - General

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There is long-standing disagreement among systematists about how to divide biodiversity into species. Over twenty different species concepts are used to group organisms, according to criteria as diverse as morphological or molecular similarity, interbreeding and genealogical relationships. This, combined with the implications of evolutionary biology, raises the worry that either there is no single kind of species, or that species are not real. This book surveys the history of thinking about species from Aristotle to modern systematics in order to understand the origin of the problem, and advocates a solution based on the idea of the division of conceptual labor, whereby species concepts function in different ways - theoretically and operationally. It also considers related topics such as individuality and the metaphysics of evolution, and how scientific terms get their meaning. This important addition to the current debate will be essential for philosophers and historians of science, and for biologists.

Species --- Philosophy. --- Biology --- GBZ General Biology, Zoology & Biophilosophy --- biophilosophy --- biodiversity --- species concepts --- evolutionary biology --- history of biology --- naturalists --- darwinism --- Speciation (Biology) --- Genetics --- Hybridization --- Organisms --- Life sciences --- Biomass --- Life (Biology) --- Natural history --- Philosophy --- Arts and Humanities

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With over 500 planets now known to exist beyond the Solar System, spacecraft heading for Mars, and the ongoing search for extraterrestrial intelligence, this timely book explores current ideas about the search for life in the Universe. It contains candid interviews with dozens of astronomers, geologists, biologists, and writers about the origin and range of terrestrial life and likely sites for life beyond Earth. The interviewees discuss what we've learnt from the missions to Mars and Titan, talk about the search for Earth clones, describe the surprising diversity of life on Earth, speculate about post-biological evolution, and explore what contact with intelligent aliens will mean to us. Covering topics from astronomy and planetary science to geology and biology, this book will fascinate anyone who has ever wondered 'Are we alone?'

Exobiology. --- Life --- Astronomers --- Geologists --- Biologists --- Life scientists --- Naturalists --- Earth scientists --- Physical scientists --- Abiogenesis --- Biogenesis --- Germ theory --- Heterogenesis --- Life, Origin of --- Life (Biology) --- Origin of life --- Plasmogeny --- Plasmogony --- Evolution (Biology) --- Exobiology --- Spontaneous generation --- Astrobiology --- Biology --- Habitable planets --- Origin. --- Origin