Impact-induced microbial endolithic habitats
Asteroid and comet impacts on Earth are commonly viewed as agents of ecosystem destruction, be it on local or global scales. However, for some microbial communities, impacts may represent an […]
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Read more of: Impact-induced microbial endolithic habitats
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The biology of impact craters – a review
Read more of: The biology of impact craters – a reviewImpact craters contain ecosystems that are often very different from the ecosystems that surround them. On Earth over 150 impact craters have been identified in a wide diversity of biomes. […]
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The Trans-Mars Expedition – a long-distance, long-duration, scientific EVA
Read more of: The Trans-Mars Expedition – a long-distance, long-duration, scientific EVAOf Martian expeditionary accomplishments, the Trans-Mars Expedition is the most audacious in terms of the logistical challenges imposed upon it and diversity of scientific foci it could encompass. The similar […]
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Impact excavation and the search for subsurface life on Mars
Read more of: Impact excavation and the search for subsurface life on MarsBecause of the ubiquity of subsurface microbial life on Earth, examination of the subsurface of Mars could provide an answer to the question of whether microorganisms exist or ever existed […]
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On the plausibility of a UV transparent biochemistry
Read more of: On the plausibility of a UV transparent biochemistrySome molecules, particularly aromatics, have high molar extinction coefficients at wavelengths in the damaging ultraviolet radiation region of the spectrum between 200 and 400 nm. Thus, under a UV radiation […]
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Photobiological uncertainties in the Archaean and post-Archaean world
Read more of: Photobiological uncertainties in the Archaean and post-Archaean worldThe notion that ultraviolet (UV) fluxes, and thus biologically weighted irradiances, were higher on Archaean Earth than on present-day Earth has been a pervasive influence on thinking concerning the nature […]
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Mars is an awful place to live
Read more of: Mars is an awful place to liveSome believe that the planet Mars holds promise as a new home for humankind and that it could become the focus of a large scale colonisation effort at some undefined […]
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Human exposure to ultraviolet radiation at the Antipodes – a comparison between an Antarctic (67oS) and Arctic (75oN) location
Read more of: Human exposure to ultraviolet radiation at the Antipodes – a comparison between an Antarctic (67oS) and Arctic (75oN) locationWe used ultraviolet radiation dosimeters to investigate human exposure at two polar latitudes with a 24-h photoperiod: at Rothera Station (UK) (67degreesS) and at a field camp in the Haughton […]
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Astrobiology – a new opportunity for interdisciplinary thinking
Read more of: Astrobiology – a new opportunity for interdisciplinary thinkingDuring the past decade new questions in science have emerged that require broad inter-disciplinary approaches. ‘Do asteroids and comets cause extinctions?’ and ‘Was there, or is there, life on Mars?’ […]
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Determining the size of lightning-induced electron precipitation patches
Read more of: Determining the size of lightning-induced electron precipitation patchesWe analyze Trimpi signatures during 23 and 24 April 1994 at four sites on or near the Antarctic Peninsula (Palmer, Faraday, Rothera, and Halley) on subionospheric VLF signals received from […]
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The causes of long-term change in the aa index
Read more of: The causes of long-term change in the aa indexThe aa index provides the longest geomagnetic data set that can be used in the analysis of magnetospheric and ionospheric phenomena. All phases of the solar cycle show increases in […]
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Macroecology comes of age
Read more of: Macroecology comes of ageThe 2002 Annual Symposium of the British Ecological Society on Macroecology: reconciling divergent perspectives on large-scale ecological patterns was held at the University of Birmingham, UK from 17 to 19 […]