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Life At The Limits

Author: David A. Wharton
Publisher: Cambridge University Press
ISBN: 9781139431941
Size: 38.59 MB
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We are fascinated by the seemingly impossible places in which organisms can live. There are frogs that freeze solid, worms that dry out and bacteria that survive temperatures over 100 ̊C. What seems extreme to us is, however, not extreme to these organisms. In this captivating account, the reader is taken on a tour of extreme environments, and shown the remarkable abilities of organisms to survive a range of extreme conditions, such as high and low temperatures and desiccation. This book considers how organisms survive major stresses and what extreme organisms can tell us about the origin of life and the possibilities of extraterrestrial life. These organisms have an extreme biology, which involves many aspects of their physiology, ecology and evolution.

Algae And Cyanobacteria In Extreme Environments

Author: Joseph Seckbach
Publisher: Springer Science & Business Media
ISBN: 1402061129
Size: 73.78 MB
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This collection of essays is devoted to algae that are unexpectedly found in harsh habitats. The authors explain how these algae thrive in various temperature ranges, extreme pH values, salt solutions, UV radiation, dryness, heavy metals, anaerobic niches, various levels of illumination, and hydrostatic pressure. Not only do the essays provide clues about life on the edges of the Earth, but possibly elsewhere in the universe as well.

Enigmatic Microorganisms And Life In Extreme Environments

Author: Joseph Seckbach
Publisher: Springer Science & Business Media
ISBN: 9401148384
Size: 13.97 MB
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Modern methods and approaches, such as the analysis of molecular sequences to infer evolutionary relationships among organisms, have provided vast new sets of data to further our understanding ofliving organisms, but there remain enigmas in the biological world that will keep scientists working and thinking for decades. Microorganisms by virtue of their small size and almost unbounded diversity provide ample examples of intriguing mysteries that are being challenged with all of the techniques the modern scientific arsenal can provide. One whole arena of this battle to resolve puzzling mysteries about various microorganisms is the almost unbelievable ability of many micro-organisms to live in extreme environments. Whether the challenge is extreme heat, cold, pressure, hyper salinity, alkalinity or acidity, some micro-organisms live now where no life might seem possible. This fascinating state of affairs is the context for this present volume edited by Joseph Seckbach. This Volume is a compilation of many of the especially interesting questions and biological challenges that arise in the consideration of microorganisms in general and the extremophiles in particular.

Life In Extreme Environments

Author: Ricardo Amils Pibernat
Publisher: Springer Science & Business Media
ISBN: 1402062850
Size: 35.85 MB
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This book provides an intriguing look at how life can adapt to many different extreme environments. It addresses the limits for life development and examines different strategies used by organisms to adapt to different extreme environments.

Unsere Einsame Erde

Author: Peter D. Ward
Publisher: Springer-Verlag
ISBN: 3642565069
Size: 62.54 MB
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Sind wir vielleicht allein im Universum? Die Antworten überraschen und führen den Leser auf eine faszinierende Reise von den vulkanischen Quellen des Ozeanbodens bis zum Jupiter-Mond. "...ein stellares Beispiel präziser Ausdruckskraft." (American Scientist)

Origins

Author: Joseph Seckbach
Publisher: Springer
ISBN: 140202522X
Size: 23.83 MB
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In this book forty eminent scientists examine the astrobiological origins of life and the emergence of biodiversity in extreme environments. The coverage includes extremophiles: microbes living in hostile conditions of high temperature, psychrophilic, UV radiation, and halophilic environments. Also discussed are the origin and history of Martian water, and the possible biogeochemistry inside Titan.

Die Unsterblichkeit Der Henrietta Lacks

Author: Rebecca Skloot
Publisher: Irisiana
ISBN: 3641051754
Size: 17.89 MB
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Dieses Buch betrifft uns alle Sie waren notwendig, um Fortschritte gegen Krebs und AIDS zu erzielen. Klonen und Genforschung wäre ohne sie nicht möglich gewesen. Kurz: Die größten Erfolge der Medizin der letzten Jahrzehnte basieren auf der Entdeckung der HeLa-Zellen. Hinter dem Kürzel verbirgt sich eine Frau namens Henrietta Lacks. Die Afroamerikanerin aus ärmlichen Verhältnissen starb 1951 jung an Gebärmutterhalskrebs. Zuvor wurden ihr ohne ihr Wissen Zellproben entnommen, die sich überraschenderweise vermehrten. Damit war der entscheidende Durchbruch in der Zellkulturforschung geschafft. Die prämierte Wissenschaftsjournalistin Rebecca Skloot stellt in ihrem brillant verfassten Buch wichtige Jahrzehnte der Medizingeschichte vor und wirft dabei immer wieder ethische Fragen auf. Sie erzählt die tragische Familiengeschichte der Lacks’, die von Rassismus und mangelnden Bildungschancen geprägt ist. Ihr Buch ist eine gekonnte Mischung aus Biografie, Medizingeschichte, Debattenbuch und beachtlichem Enthüllungsjournalismus.

The Limits Of Organic Life In Planetary Systems

Author: National Research Council
Publisher: National Academies Press
ISBN: 030910484X
Size: 39.31 MB
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The search for life in the solar system and beyond has to date been governed by a model based on what we know about life on Earth (terran life). Most of NASA's mission planning is focused on locations where liquid water is possible and emphasizes searches for structures that resemble cells in terran organisms. It is possible, however, that life exists that is based on chemical reactions that do not involve carbon compounds, that occurs in solvents other than water, or that involves oxidation-reduction reactions without oxygen gas. To assist NASA incorporate this possibility in its efforts to search for life, the NRC was asked to carry out a study to evaluate whether nonstandard biochemistry might support life in solar system and conceivable extrasolar environments, and to define areas to guide research in this area. This book presents an exploration of a limited set of hypothetical chemistries of life, a review of current knowledge concerning key questions or hypotheses about nonterran life, and suggestions for future research.

Limits Of Life

Author: Cyril Ponnamperuma
Publisher: Springer Science & Business Media
ISBN: 9400990855
Size: 34.92 MB
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This volume is the fourth in the series of the Proceedings of the College Park Colloquia on Chemical Evolution. These Colloquia, and the resulting Proceedings, are presented in the interest of fostering the impact of the interdisciplinary nature of chemical evolu tion on contemporary scientific thought. vii EDITORS'INTRODUCTION The Fourth College Park Colloquium on Chemical Evolution was held on October 18 - 20, 1978 at the University of Maryland. The meeting, supported by the National Aero nautics and Space Administration and the National Science Foundation, centered on the variable environments, both past and present, in which living organisms have survived, grown, and evolved - the limits of life. Previous colloquia had emphasized the Giant Planets (1974) 1, Early Life during the Precambrian (1975)2 and Comparative Planetology (1976)3. The College Park Colloquia have been noted for the broad interdisciplinary nature of the training and interests of the participants. The fourth meeting was no ex ception with the participation of approximately 85 researchers, representing many academic fields. As with previous meetings, the interdisciplinary approach to the question of the limits of life encouraged the exchange of knowledge and information. A major scientific aspiration is to understand why living systems are restricted to certain environments.

Laudato Si

Author: Franziskus (Papst),
Publisher: Verlag Herder GmbH
ISBN: 345180736X
Size: 45.71 MB
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Mit großer Spannung wurde sie erwartet, auch von Nicht-Katholiken: Die Umwelt-Enzyklika von Papst Franziskus nimmt die heute entscheidenden Themen in den Blick; es geht um die geht um soziale, ökologische und politische Zusammenhänge. Wohl selten war ein päpstliches Schreiben so aktuell und brisant und vor allem relevant für alle Gesellschaftsschichten und Menschen weltweit. Mit "Laudato si" beweist Franziskus, dass die Kirche nach wie vor eine unverzichtbare Stimme im Diskurs zur Gestaltung der modernen Welt ist. Wer verstehen will, wie Papst und Kirche die großen Herausforderungen unserer Zeit bestehen wollen, kommt an diesem Werk nicht vorbei. Ein Muss für jeden, der an den drängenden Fragen unserer Zeit interessiert ist.