Dust from London can also drift across the Sahara Desert

In Spain, where the land is rich in carbonate materials, dust contains 20 times as much calcium as dust in Nigeria, where the geology is quite different. After a particularly violent storm,scientists identified dust from the Sahara Desert thousands of miles away in London,based on its specific composition. In the future, we may be able to pinpoint the origins of dust samples even more specifically, down to a particular neighborhood or even house something that may be of great help for forensic specialists.