Even though water covers more than 70% of the earth’s surface, only 0.003% of it is fresh water. Annual rainfall is the only way to replenish freshwater sources in many parts of the world.
But what if we were able to desalinate water? Then there are oceans to assist us in obtaining fresh water. However, it is easier said than done. Water desalination requires a lot of resources. The water must first be boiled, converted to steam, and then condensed. To generate heat, a significant amount of fossil fuels are required. But there is still hope because advances in the field have resulted in graphene filters that can desalinate water using only hydrostatic pressure.