A Christmas tree laden with decorations topples over, bursts into flames and sends the family cat scampering up the curtains. It sounds like a scene from a National Lampoon movie involving Chevy Chase and a drunken squirrel, but every December, doctors and veterinarians across Canada treat burns, poisonings, allergic reactions, and the results of swallowing small ornaments. Mould on a freshly-cut tree is one of those unexpected health hazards. People often do not know they have a mould allergy until they experience... read more