The process of removing salt from seawater is called desalination. This technology is becoming increasingly important in addressing water scarcity issues, particularly in arid regions where freshwater resources are limited. Desalination can be achieved through various techniques, such as reverse osmosis, where seawater is forced through a semi-permeable membrane that allows only water molecules to pass while rejecting salt and other impurities. Another method, thermal distillation, involves heating seawater to create steam, which is then condensed back into liquid water. Although effective, desalination can be energy-intensive and costly, raising environmental and economic concerns.