Its objective is a deeper and more fundamental understanding of the rapidly growing inter-dependence of the nature-society system and the intention to make this sustainable.
The maintenance of clean urban cycles (via the sustainable implants integrated infrastructure approach) is analyzed to prove the fulfillment of the sustainability ambition.
In colder climates, heating systems are a primary focus for sustainable architecture because they are typically one of the largest single energy drains in buildings.
So press freedom is definitely one condition for a sustainable media system and therefore it becomes evident that the indices examine much the same phenomenon.