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.

It’s a wintertime question that you may have had as you struggled down a frozen sidewalk, or strapped on some ice skates: Just why is ice slippery, anyway? It turns out the answer is somewhat ...

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 ...

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