Planting trees in forests is a commonly used strategy for companies and governments to lower CO2 in the air. But what can we do in dense cit
The ‘liquid tree’ is a photosynthetic bioreactor containing algae that converts CO2 to oxygen. Developed by scientists in Serbia, it “contains six hundred litres of water and works by using microalgae to bind carbon dioxide and produce pure oxygen through photosynthesis.”
It requires little maintenance, and the used biomass can be used as fertilizer.
Incorporated into benches with phone charging ports and a solar panel to light it up at night, the prototype algae kiosk is aimed to complement trees in urban areas where trees will take a longer time to grow; it’s also more 10 to 50 times more efficient at binding CO2.
