A closer look
Louis Pasteur discovered that biological molecules have a 'handedness' or chirality, but the wild part is how this microscopic preference snowballs. When small, left-handed molecules stack together like Lego bricks into massive supramolecular assemblies, they mathematically force the entire megastructure to twist in a specific direction. This phenomenon, called chirality transfer, is exactly why your DNA spirals to the right, dictating the architecture of all life on Earth based on a molecular coin flip.
