Open Access Review
Review: Prebiotic Phosphorylation Reactions on the Early Earth
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Challenges 2014, 5(2), 193-212; doi:10.3390/challe5020193 - published online 18 July 2014
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Article: Enantioselective Crystallization of Sodium Chlorate in the Presence of Racemic Hydrophobic Amino Acids and Static Magnetic Fields
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Challenges 2014, 5(1), 175-192; doi:10.3390/challe5010175 - published online 5 June 2014
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Article: Assessing the Possibility of Biological Complexity on Other Worlds, with an Estimate of the Occurrence of Complex Life in the Milky Way Galaxy
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Challenges 2014, 5(1), 159-174; doi:10.3390/challe5010159 - published online 28 May 2014
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Article: CO Self-Shielding as a Mechanism to Make 16O-Enriched Solids in the Solar Nebula
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Challenges 2014, 5(1), 152-158; doi:10.3390/challe5010152 - published online 21 May 2014
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Article: Changes in Acid Herbicide Concentrations in Urban Streams after a Cosmetic Pesticides Ban
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Challenges 2014, 5(1), 138-151; doi:10.3390/challe5010138 - published online 31 March 2014
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Concept Paper: Moving Towards Sustainable and Resilient Smart Water Grids
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Challenges 2014, 5(1), 123-137; doi:10.3390/challe5010123 - published online 21 March 2014
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