In the 1860s, Admiral Robert Fitzroy popularized the storm glass, which promised to predict storms on the high seas. This cool cloud is a modern twist on this classic device, the Storm Cloud is an age-old way of seeing what the weather has in store. Although not as accurate as a barometer, the special liquid inside crystallizes to indicate changes in the elements, making this decorative device a perfect addition to the windowsill or desk of the curious-minded. Fun for kids to watch and a starting point to learn more about meteorology!