Engineering Innovation Podcast and Radio Series


PostedSeptember 10, 2017

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LEDE: A new “smart tree” may soon help make cities greener and cleaner.

Randy Atkins: Urban areas are infamous for poor air quality and lack of greenery.  So, Liang Wu, co-founder of Green City Solutions, helped engineer CityTree…artwork made of moss that can help clean the air.

Zhengliang Wu: The moss captures the pollutants, then converts a lot of those pollution particles into biomass as it grows and eats the pollutants.

Randy Atkins: And Wu says the CityTree cares for itself. It’s equipped with a solar panel that powers a watering system using rain.

Zhengliang Wu: It collects water, which gets stored in the water tank and then reused for irrigation of the plant.

Randy Atkins: Wu says his team is creating another version of CityTree that can be used to decorate and clean the air around private homes.  With the National Academy of Engineering, Randy Atkins, WTOP News.