It’s really neat how the world’s largest desert is responsible for creating the world’s largest rain forest. It’s also interesting that the amount of phosphorus in the sand sent from the Sahara 20,000 tonnes is about the same amount that the Amazon loses from rain and flooding every year. In total, about 25 million tonnes of dust is blown over from the Sahara to the Amazon. NASA says that’s enough to fill 104,980 semi trucks.