For over 400 years, sailors have used barometers to predict changes in the weather. That elegant application of scientific principals has been fused with modern artistry to create this black swan storm glass. When atmospheric pressure is high, indicating fair weather ahead, the black liquid inside sinks low in the neck. When atmospheric pressure is low and the liquid rises towards the swan's head, a storm is on the way. Zach Borutski designed the sleek, iconic swan shape, which is carefully packed with a syringe and some black dye. Just add water, and you're good to go with a science lesson, a modern decorative accent, and a glimpse of history all rolled into one. Designed and assembled in Ottawa, Canada. Parts handmade in China.