Supercool, and Strange

Scientists are finding clues about why water is so utterly weird

You wouldn’t expect to learn much about the properties of water by watching a square dance. But think again. Following the caller’s lead, the dancers meet, separate, weave, and swing in a perfectly fluid manner.

Confining water molecules in nanometer-size pores has provided new evidence that, in addition to its many other oddities, H2O may exist in two distinct liquid phases at ultralow temperatures.