London-based architecture and innovation firm ecoLogicStudio, led by Claudia Pasquero and Marco Poletto, has designed AirBubble for Otrivin Breathe Clean. The innovation brings to life the world’s first biotechnological playground to integrate air-purifying micro-algae.

AirBubble creates a purified microclimate for children to play in, a true bubble of clean air in the centre of Warsaw (Poland). The project is located within the public green space outside of the Copernicus Science Centre (Centrum Nauki Kopernik), a site which will also host a dedicated exhibition illustrating the design innovation behind the invention of AirBubble. The playground integrates the Photo.Synthetica technology for the advanced integration of photosynthesis in the built environment.

“There is untapped value in bringing the bio-intelligence of natural systems into cities, turning buildings into living machines that produce energy, store CO2 and clean the air. To achieve this, we need to think about the living world as a part of the current digital revolution: nature becomes part of a new bio-smart infrastructure.” — says Marco Poletto, co-founder of ecoLogicStudio.

According to the World Health Organization (WHO), air pollution is the biggest global health threat. Warsaw was selected as the first activation for this project as it is one of the most polluted cities in Europe.

AirBubble invents a new architectural typology. It incorporates a cylindrical timber structure wrapped in an ETFE membrane protecting 52 glass algae reactors. This creates a real urban algae greenhouse. The space is equipped with ropes, foot pumps and bouncy spheres, and can function as both playground and outdoor classroom. The white bubbling noise of the algae gardening system masks the surrounding urban noise to provide a calming atmosphere in which to play and interact.

The filtering process is enhanced by the architectural morphology of the playground structure. The ETFE membrane – an evolution of the PhotoSynthetica urban curtain system presented in Dublin in 2018 by ecoLogicStudio – controls the microclimate inside AirBubble. The inverted conical roof membrane further stimulates the air recirculation and natural ventilation, which in turn keeps the play area clean.

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The AirBubble monitoring system integrates urban air pollution sensors and is connected to a data processing platform capable of comparing measurements in real time and of highlighting the Air Quality Index for six core pollutants: fine particulate PM2.5 and PM10, ground level Ozone (O3), Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2) and Carbon Monoxide (CO). AirBubble is capable of  absorbing 97% of the nitrogen and 75% of the particulate matter in the air.

Early data collected in May 2021 shows concentrations of PM2.5 within the playground have fallen well within the recommended WHO limits (green zone, AQI below 20). The peak reduction rate is an impressive 83%. This figure has been calculated by comparing readings from a pollution sensor located outside AirBubble with real-time data feeds from a monitoring device placed inside.
 The monitoring phase will continue throughout the summer and into the autumn to verify these promising achievements over a longer period of time, under different climatic conditions and patterns of use.

Over the next few months, AirBubble will become a unique urban laboratory, a test bed of applied biotechnology and its application in tackling air pollution and in mitigating its effect on children’s health.

The AirBubble hosts 52 large bioreactors in borosilicate glass which contain 520 litres of living green Chlorella sp algae cultures that can filter a flow of polluted air of 200 litres/minute. While the liquid medium washes particles, the algae actively eat the polluting molecules as well as carbon dioxide to then release fresh clean oxygen.

The purifying process is powered by solar energy and children’s playfulness. Kids can interact by jumping on four water foot pumps positioned on the ground while balancing on the bouncy bubbles and the internal rope system.

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“This playground needs two sources of power: solar energy and kids’ instinctive drive to explore and to play. These constitute the inexhaustible and renewable fuels of the AirBubble that can be obtained effortlessly. The AirBubble is the trigger of a process that can only grow and multiply its beneficial effects towards future generations. It’s all in our hands – we are responsible for our health and climate.” — explains Claudia Pasquero, co-founder of ecoLogicStudio

To mark the inauguration of the first ever AirBubble, ecoLogicStudio has designed an interactive multimedia exhibition at the Copernicus Science Centre (Centrum Nauki Kopernik), illustrating the architectural innovation and biotechnology at the heart of the playground system.

The exhibition is composed of three areas: Monitor explores urban air pollution from the unique perspective of children’s health. Purify the air reveals the powerful symbiosis of architecture and living microorganisms, and focuses on the filtration and re-metabolization of air pollutants. Breathe engages kids in an interactive demonstration of how to heal their bodies and our cities through the energy of play and breathing clean air.

“We are so grateful to our partners, ecoLogicStudio, for creating the first biotechnological playground that seeks to purify the air using micro-algae, so children can play and have fun without worrying about air pollution. Unfortunately, according to the WHO, 93% of children in the world play in harmful levels of air pollution, and together with medical experts, we are concerned about the impact on their respiratory health. The innovative approach from ecoLogicStudio, combining architecture, biotechnology and science, led to the creation of the Otrivin AirBubble, which can raise vital awareness about air pollution and the importance of breathing clean air, especially for children.” — asserts Farhad Nadeem, Otrivin Global Marketing Director.

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The AirBubble playground at the Copernicus Science Centre (Centrum Nauki Kopernik) is open to the public from 19 May, 2021.


PhotoSynthetica™ is an innovation venture of ecoLogicStudio, launched by Claudia Pasquero and Marco Poletto in 2018. The development of PhotoSynthetica™ is supported by significant academic partnerships with the Urban Morphogenesis Lab, in UCL London, and with the Synthetic Landscapes Lab, at the University of Innsbruck.

Mission is:

—Integrate Nature into cities beautifully and efficiently.
—Help decarbonise cities.
—Retrofit buildings into bio-power stations.
—Absorb and re-metabolise air pollution.
—Bring photosynthesis to the built environment.
—Pioneer the bio-Smart sector.
—Cultivate the public realm collectively.
—Enable the urban healthy food revolution.


Otrivin Breathe Clean is a non-medicated Nasal Wash comprising of Natural Ingredients – Isotonic Sea Salt Solution and Natural Glycerin, produced by GSK. With increasing levels of air pollution and germs, the Daily Nasal Wash helps in washing them away from the nose. It also gently cleanses the nasal cavity during a cold or in allergic conditions, washes away excess particles like dust and pollen, and soothes the nasal passage. Glycerin acts as a moisturizer and helps soothe and moisturize the nose. The product is suitable for daily cleansing and can be used for all ages 2 years and above. Spray 1 to 2 times a day per nostril and as often as needed. The product is available in a 100 ml can and comes with an Aerosol Spray for greater coverage of the nasal passage.

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