Life defined

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"Life is a thermodynamically open chemical system with a semi-permeable boundary. It contains an information-based complex system with emergent properties, part of which drives a metabolism based on a proton gradient. The said gradient generates the necessary potential difference across the semi-permeable boundary. The information is heritable and coded in such a way as to allow variation and thus evolution."

by, Sohan Jheeta, astrobiologist from the Open University in Milton Keynes,UK

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