Arsenic in the evolution of earth and extraterrestrial ecosystems

Geomicrobiology Journal
By: , and 



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.

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

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Arsenic in the evolution of earth and extraterrestrial ecosystems
Series title Geomicrobiology Journal
DOI 10.1080/01490450903102525
Volume 26
Issue 7
Year Published 2009
Language English
Publisher Taylor and Francis
Contributing office(s) Toxic Substances Hydrology Program
Description 15 p.
First page 522
Last page 536