International 
. With the arrival of high temperatures, the massive use of air conditioning increases. This situation increases CO2 emissions and increases the outside temperature of large cities due to the heat emitted by the devices. However, the global organization WWF has recently published some alternatives to cool indoor spaces without aggravating the greenhouse effect.
First, the WWF argues that the use of ceiling fans instead of electric air conditioning equipment represents a saving of 300 kilos of CO2 during this season. In addition, to achieve the greatest efficiency of these devices, it is necessary to use natural lighting that helps keep the temperature low.
Another option is to paint the exterior walls of buildings in light colors, so that the sun's radiation is reflected and its absorption and transmission to the interior is prevented; the same as ventilating the rooms naturally by opening the windows in opposite orientations.
Another of the options exposed by the WWF to acclimatize the spaces in a natural way is to locate plants on balconies and terraces, since they improve air quality, microclimate and also visual comfort in urban enclosures.
Finally, for those who have doubts about it, the organization has arranged its internet portal www.eurotopten.es, through which consumers can receive advice on which are the devices with less energy consumption, their correct installation, use and maintenance.
