[CLIP: Skates cut across the ice at an ice rink, and music plays in the background.] Kendra Pierre-Louis: So we’re out here today in lower Manhattan ice-skating. There are lots of kids skating around, ...

Winter Storm Fern, a rare convergence of Arctic cold and Southwest moisture, seems set to bring Arctic weather to many parts of the U.S. this weekend. With it, storm warnings included familiar ...

The original version of this story appeared in Quanta Magazine. 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 ...