| http://www.w3.org/ns/prov#value | - Trees do not work in many places, such as the urban areas where cars are more likely to be concentrated at.Trees are not a fire and forget tech, they require a good bit of maintence if you are attempting to use them for a purpose they require water, protection from pests and diseases, and room.If you check the article, the device is the size of a small trailer, and pulls out a ton of CO2 a day.
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