Why is life left-handed? The answer is in the stars - 2 views
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Nina Nadine Ridder on 22 Jul 15While most humans are right-handed, our proteins are made up of lefty molecules. In the same way your left and right hands mirror one another, molecules can assemble in two reflected structures. Life prefers the left-handed version, which is puzzling since both mirrored types form equally in the laboratory.