Ultrabooks are distinguished from netbooks by offering more power in the form of faster processors and additional RAM, as well as better storage and larger screen sizes, features that also make these laptops significantly more expensive than most netbooks.
Desalination is a process that extracts minerals from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance, as in soil desalination, which is an issue for agriculture. Saltwater is desalinated to produce water suitable for human consumption or irrigation. One by-product of desalination is salt.
Today China can desalinate 600,000 tons of water a day, but it aims to produce 2.5 to 3 million tons of desalinated water a day by 2020, mainly for use in the dry northern areas. However, desalination is expensive and requires energy, which, in turn, involves more water.