In Grand Lake, not far from the Rocky Mountains National Park, it has become a tradition for people to get together and play ice hockey on the frozen lake in the middle of winter. Kate introduces us to some of her friends there and also to a very American snack, the s’more!

You might have thought that “rock, paper, scissors” was a game of sheer chance, but scientists have shown that people play with a “predictable irrationality,” and that there are strategies that can help you to win.