The social and cultural influence of Matriarchs results in their voices having enormous sway over debates relating to their chosen fields, but there is no 'hard-wired' mechanism by which any asari's opinion on any matter is given more weight than any other's. There are no politicians or elected representatives - each citizen is permitted equal access to the decision-making process, via a dedicated planetary communications network (e-democracy) in which matters of policy are freely debated, and decisions arrived at by general agreement. Many employ it to generate a variety of biotic effects, though a significant number of species do not, having adapted simply to experience no ill-effects from its presence.

Virtually all Thessian life (excepting a handful of species existing in very specific localised environmental conditions) are adapted to the element zero in the planet's ecosystem.

Urbanisation is widespread - the centres of great republics such as Serrice are almost entirely built over, including the reworking of natual terrain into urban design - but even in the most heavily populated areas there remain significant areas of parkland, and in many republics areas of natural growth are left undisturbed even in proximity to high population densities. As a species late to emerge from aquatic form, asari settlement remains concentrated on coastlines, with settlements in the interior of continents originating in farming and mining ventures. Thessia is a model garden world, with a stable climate and abundant natural resources, supporting self-sufficient asari habitation in virtually all regions outside the poles. Asari living elsewhere suffer no ill effects from the lack of eezo, but pregnant asari on other worlds must take eezo-enriched supplements to simulate the Thessian concentrations of eezo in their diet, which are passed on to their daughters in utero. The Thessian environment contains near-omnipresent trace element zero concentrations, leading to virtually all Thessian lifeforms being adapted to it, and many (including the asari themselves) have innate biotic abilities.

Thessia is the asari homeworld, and de facto capital world (although no formal hierarchy exists) of the Asari Republics.

Asari homeworld