Gusca is an search engine in the database of Google, however with the deep black color.
Its objective is to reduce the load energy and the evil caused to the eyes in function of the excess of projected luminosity for the deep white of sites and to reduce the consumption of energy necessary to make its research.

To show a white entire monitor, its computer spends about 74 watts, while to show to an entire monitor in black color the consumption watts is of 59.

The excess of deep luminosity produced for a total white one is much more harmful to the eyes that deep a total black one.

Now, it imagines amount of energy that it would be saved if the Google, that is entirely white and receives about 200 million consultations per day, was total black. Therefore, we develop the dark version of the Google - Gusca.

In its blog (EcoIron), the American Mark Ontkus made the accounts of what if he could save e, leaving of the estimated one that each consultation is shown per 10 seconds, arrived at the conclusion that this change would save 750 megawatts/hour (mWh) per year!