Add Yahoo as a preferred source to see more of our stories on Google. New simulations show ice stays slippery in deep cold because its crystal structure breaks down under motion, not because it melts.

For centuries, people believed ice was slippery because pressure and friction melted a thin film of water. But new research from Saarland University reveals that this long-standing explanation is ...

When you step onto an icy sidewalk or push off on skis, the surface can seem to vanish beneath you. For more than a century, scientists have debated why ice stays slippery, even well below freezing.