When news breaks, you need to understand what actually matters. At Vox, our mission is to help you make sense of the world — and that work has never been more vital. But we can’t do it on our own. We ...

The reason we can gracefully glide on an ice-skating rink or clumsily slip on an icy sidewalk is that the surface of ice is coated by a thin watery layer. Scientists generally agree that this ...

SEATTLE — Black ice is one thing to make a road slippery, but what about plain old rain? Is it really more slippery right when it comes down? The answer is pretty simple: Yes, because oil and water ...