Richard Hammond did a pop-science series about the weather and it talked about how dust from deserts can move very far. It's an interesting watch: https://youtu

Richard Hammond did a pop-science series about the weather and it talked about how dust from deserts can move very far. It's an interesting watch: https://youtu.be/DeYvP2A3QvU&t=8m20s https://youtu.be/DeYvP2A3QvU&t=8m20s The dust particles bounce against one another and propel some of the particles higher and higher up into the atmosphere. Then the winds can carry them very far.