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Extensive adoption of green roofs in a million-person city could capture 55,000 tons of CO2 annually, according to a two-year study from Michigan State University.
MSU study reportedly is the first major analytics on green roofs true environmental impact.
The research – led by MSU horticulture professor Brad Rowe and doctoral research assistant Kristin Getter – determined that every square meter of a plant like sedum can capture 375 grams of CO2 per year. Rowe, has been testing green roof technology since 2000, admitted that 375 grams per square meter is not a large amount, but if buildings were equipped with green roofs over a large area, it would amount to a significant carbon sink.