Meteorites delivered the 'seeds' of Earth's left-hand life

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A simulated ribosome (white and purple subunits) processing an amino acid (green). Courtesy Los Alamos National Laboratory
A simulated ribosome (white and purple subunits) processing an amino acid (green). Courtesy Los Alamos National Laboratory

Flash back three or four billion years — Earth is a hot, dry and lifeless place. All is still. Without warning, a meteor slams into the desert plains at over ten thousand miles per hour. With it, this violent collision may have planted the chemical seeds of life on Earth.


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