Menus have evolved greatly over the last few centuries. They reflect a restaurant's location, culinary trends and of course the availability of ingredients. Now, scientists are studying 130-year-old seafood restaurant menus in Vancouver, to uncover how climate change is impacting the food making it to diners' plates. Ian Rose is a writer based outside Portland, Oregon. He's charted this study, which sought help from city hall, historical societies, and local museums, to uncover the link between restaurant menus and our warming seas.