You still have 8 marines and 4 hellions which was the TvT killing build for a long time in HoTS <| sep |> UCE ? Unboxing pics ? <| sep |> I understand that it is not as effective as you point out , but I don ' t understand your statement It doesn ' t work , and will never work . Are you assuming everyone is thinking this building in its current form will not undergo redesign and revision . Or are you assuming that everyone is expecting it to keep the air 100 % clean over a large area ? I always assumed this would be limited to a small foot print working during peak carbon emission periods like rush hour . Or put near industrial areas as a by law for high carbon foot print companies . More as a mitigating factor . I feel like your post is making the assumption that this project would be done all at once over a short period of time . It ' s like asking the United states to rebuild all its highways from scratch in a month , rather than over time through a series of planed projects for infrastructure improvements . Your issues of current power supply being supported by coal is accurate , but with recent investments into wind turbine , solar and with china flooding large areas for hydro electric , that doesn ' t have to be true forever .