Influx studio submitted a plan is for the Marina City tower building in Chicago to retrofit the building with microalgae as one of the components to make the building more sustainable. The microalgae is used to clean polluted air, to create energy onsite, allow food production, and to process all wastewater to be reused (AETRANGERE, 2012b). The project is all about closing loops within the building. Carbon is captured by two carbon scrubbers at the top of the building and is then used for the microalgae cultivation. The oxygen is released from the carbon scrubber and microalgae cultivation which will clean the surrounding air. The carbon scrubbers are also used as wind turbines and will therefore generate electricity. The wastewater will be purified by a phytoremediation garden in the lower part of the tower which also functions a vertical farm.