<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>C.W. Saltikov</dc:contributor>
  <dc:contributor>Felisa Wolfe-Simon</dc:contributor>
  <dc:contributor>J.F. Stolz</dc:contributor>
  <dc:creator>R.S. Oremland</dc:creator>
  <dc:date>2009</dc:date>
  <dc:description>&lt;div class="quote"&gt;&lt;p&gt;If you were asked to speculate about the form extra-terrestrial life on Mars might take, which geomicrobial phenomenon might you select as a model system, assuming that life on Mars would be ‘primitive’? Give your reasons.&lt;/p&gt;&lt;/div&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;At the end of my senior year at Rensselaer Polytechnic Institute in 1968, I took Professor Ehrlich's final for his Geomicrobiology course. The above question beckoned to me like the Sirens to Odysseus, for if I answered, it would take so much time and thought that I would never get around to the exam's other essay questions and consequently, would be “shipwrecked” by flunking the course. So, I passed it up. With this 41-year perspective in mind, this manuscript is now submitted to Professor Ehrlich for (belated) “extra-credit.” R.S. Oremland&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1080/01490450903102525</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Taylor and Francis</dc:publisher>
  <dc:title>Arsenic in the evolution of earth and extraterrestrial ecosystems</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>