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.

It’s an oft-cited science “fact” that ice is slippery due to pressure or friction, but this explanation doesn’t explain why ice’s slippery behavior remains at temperatures where such melting isn’t ...

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.