Ice is nature's great preservative. When we buy groceries, we put them in the freezer because we know they'll last longer when they've been frozen over. We've found shipwrecks, fossils, and animal remains preserved in ice for thousands of years, almost perfectly protected from the passing of time. With cryogenic freezing, it's possible that human beings will one day be able to sit out eternity! That's for the future, though right now, we have this fantastic video of incredible things that have been found in ice.