Detailed text transcripts for TV channel - DW - 20180311:21:36:00
. that are a model calculations which look at what would happen if you could at 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 local hot that has raised hopes of creating an urban environment free of nitrogen dioxide however titanium dioxide self 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 you've got it with the fiber vice and wherever you see t...
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