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Helfman, PM, Bada JL, Shou MY.  1977.  Considerations on Role of Aspartic-Acid Racemization in Aging Process. Gerontology. 23:419-425.Website
Parker, ET, Cleaves JH, Burton AS, Glavin DP, Dworkin JP, Zhou MS, Bada JL, Fernandez FM.  2014.  Conducting Miller-Urey experiments. Jove-Journal of Visualized Experiments.   10.3791/51039   AbstractWebsite

In 1953, Stanley Miller reported the production of biomolecules from simple gaseous starting materials, using an apparatus constructed to simulate the primordial Earth's atmosphere-ocean system. Miller introduced 200 ml of water, 100 mmHg of H-2, 200 mmHg of CH4, and 200 mmHg of NH3 into the apparatus, then subjected this mixture, under reflux, to an electric discharge for a week, while the water was simultaneously heated. The purpose of this manuscript is to provide the reader with a general experimental protocol that can be used to conduct a Miller-Urey type spark discharge experiment, using a simplified 3 L reaction flask. Since the experiment involves exposing inflammable gases to a high voltage electric discharge, it is worth highlighting important steps that reduce the risk of explosion. The general procedures described in this work can be extrapolated to design and conduct a wide variety of electric discharge experiments simulating primitive planetary environments.

Bada, JL, Schroede.Ra, Protsch R, Berger R.  1974.  Concordance of Collagen-Based Radiocarbon and Aspartic-Acid Racemization Ages. Proceedings of the National Academy of Sciences of the United States of America. 71:914-917.   10.1073/pnas.71.3.914   Website
Bada, JL, Hoopes E, Ho M.  1982.  Combined Amino-Acids in Pacific-Ocean Waters. Earth and Planetary Science Letters. 58:276-284.   10.1016/0012-821x(82)90200-x   Website
Bada, JL.  1995.  Cold Start. Sciences-New York. 35:21-25.Website
Peltzer, ET, Bada JL, Schlesinger G, Miller SL.  1984.  The chemical conditions on the parent body of the Murchison meteorite: some conclusions based on amino, hydroxy and dicarboxylic acids. Advances in space research : the official journal of the Committee on Space Research (COSPAR). 4:69-74.   10.1016/0273-1177(84)90546-5   AbstractWebsite

Amino and hydroxy acids have been identified in the Murchison meteorite. Their presence is consistent with a synthetic pathway involving aldehydes, hydrogen cyanide and ammonia in an aqueous environment (Strecker-cyanohydrin synthesis). From the various equilibrium and rate constants involved in this synthesis, four independent estimates of the ammonium ion concentrations on the parent body at the time of compound synthesis are obtained; all values are about 2 x 10(-3) M. Succinic acid and beta-alanine have also been detected in the Murchison meteorite. Their presence is consistent with a synthesis from acrylonitrile, hydrogen cyanide and ammonia. Using the equilibrium and rate constants for this synthetic pathway, and the succinic acid/beta-alanine ratio measured in the Murchison meteorite, an estimate of the hydrogen cyanide concentration of 10(-3) to 10(-2) M is obtained. Since hydrogen cyanide hydrolyzes relatively rapidly in an aqueous environment (t1/2 < 10(4) yrs) this high concentration implies a period of synthesis of organic compounds as short as 10(4) years on the Murchison meteorite parent body.

Pereto, J, Bada JL, Lazcano A.  2009.  Charles Darwin and the Origin of Life. Origins of Life and Evolution of Biospheres. 39:395-406.   10.1007/s11084-009-9172-7   AbstractWebsite

When Charles Darwin published The Origin of Species 150 years ago he consciously avoided discussing the origin of life. However, analysis of some other texts written by Darwin, and of the correspondence he exchanged with friends and colleagues demonstrates that he took for granted the possibility of a natural emergence of the first life forms. As shown by notes from the pages he excised from his private notebooks, as early as 1837 Darwin was convinced that "the intimate relation of Life with laws of chemical combination, & the universality of latter render spontaneous generation not improbable". Like many of his contemporaries, Darwin rejected the idea that putrefaction of preexisting organic compounds could lead to the appearance of organisms. Although he favored the possibility that life could appear by natural processes from simple inorganic compounds, his reluctance to discuss the issue resulted from his recognition that at the time it was possible to undertake the experimental study of the emergence of life.

Becker, L, McDonald GD, Bada JL.  1993.  Carbon Onions in Meteorites. Nature. 361:595-595.   10.1038/361595a0   Website