Detailed text transcripts for TV channel - DW - 20180312:17:36:00
Titanium dioxide to all concrete surfaces that wouldn't just reduce the concentration of nitrogen dioxide in individual areas but could give an entire city the capacity to purify it's a vocal. that has raised hopes of creating an urban environment free of nitrogen dioxide however titanium dioxide itself is controversial there are indications it too may have an adverse effect on human health and could even cause cancer it's a problem that is keen to play down the what it would be five advice wherever you see the color white and your environment there is titanium dioxide on it whether it's a whi...