Whispers of Light Reveal Secrets of Ultracold Water

How low can you go? That's the question a collaboration of sixteen European scientists have set out to answer, in regards to one of the most ubiquitous-yet-mysterious substances on Earth: water.Ordinarily, water freezes at 0°C, when its molecules stop moving fast enough to overcome the forces between them, clicking together to form a crystalline lattice. This isn't a hard and fast line, though: that lattice generally needs a "seed" disturbance to act as a starting point. Under the right circums...