A stop-motion experiment reveals supercooled water’s dual nature
Liquid water at temperatures well below freezing has two different arrangements of molecules
![water molecule illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/09/092120_ec_supercooled-water_feat.jpg?fit=1028%2C579&ssl=1)
Liquid water cooled to very low temperatures has high-density and low-density arrangements of molecules, a new study suggests. The high-density structure is illustrated here with molecules containing oxygen atoms (red spheres) and hydrogen atoms (silver spheres).
Timothy Holland/Pacific Northwest National Laboratory