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.
That desalinated water, however, won't be cheap. When you want to desalinate, it's incredibly energy-intensive, and therefore cost-intensive, said Michael Webber, deputy director of the Energy Institute at the University of Texas at Austin. And that's the rub of it. It's drought-resistant, it's abundant, it's never going to go away, but it's costly to do.. There are two main desalination processes. Thermal, as the name implies, involves heating salt water and then distilling pure, drinkable water from the steam. And there's reverse osmosis, the process Carlsbad will use -- where sea water or brackish water is forced through filter membranes that remove the salts.