Every now and then, Transport Canada changes the safety rules that dictate what people are allowed to bring on flights or not. Monday, they released an update which, among other things, prohibits Canadians from carrying powders and granular materials in excess of 350 ml on board a plane (things such as baby powder and sand are included).
Most interestingly, though, the transit authority will now start allowing Canadians to travel with small knives in their carry-on:
Very small knife blades (6 cm or less—about the size of a large paper clip) will not be prohibited on domestic or international flights. To respect our security screening agreement with the United States, knife blades of any length will remain prohibited on flights to the United States through preclearance facilities. Razor blades and box cutters of any size will remain prohibited at all screening checkpoints.
Large knives will still be prohibited, and the rules will stay the same for flights to the United States.