[Lee Stewart]

Scientists found that Arctic Cod have developed an evolutionary mechanism to keep them from freezing in the icy waters they inhabit. Cod keep from freezing because they have actual antifreeze proteins (literally called antifreeze glycoprotein) that circulates in their blood to keep it in liquid form, and not ice. This led researchers at Warwick University to create a new polymer to preserve blood called Polyvinyl alcohol that acts like antifreeze and prevents freezing, which can kill cells.