1. You lay down a bunch of tubes in the desired shape (usually a ring or an oval works best for an ice rink, naturally).
The science behind it is complicated. Let’s just say that it helps keep the ice really, really cold (read a bit more here).
- Record-breaking freediver, Natalia Molchanova, is feared dead. She disappeared while diving off the coast of Spain on Sunday.
- Super Typhoon Soudelor, the strongest storm of 2015 so far, is threatening parts of Asia after hitting the Pacific island of Saipan.