Uploaded on 2019-08-26 by James Seo

Two invisible information from Seoul Tower: 1. Danger to your health 2. Radio waves The level of air pollution can become knowledge by using colors to signal the concentration of microdust in the air: Blue indicates a "safe level". This can contribute to the planning of a more livable urban space by warning citizens when pollution levels are high so they can protect themselves by wearing a proper respirator or by staying indoors.