Matt Ford gets Ditched for addressing only half of this story. True, this is a very intriguing innovation that could help reduce airborne toxins in the areas that implement it. However, is there not any worry about the glut of nitrates that would be washed in to the water supply if this material were used in mass? Are we perhaps trading one negative for another? I am envisioning a time 25 years down the road when it is discovered that the overwhelming presence of nitrates in our urban environments is contributing to a supply of detrimental health effects that have been increasing in frequency over the years. Perhaps the true, long term solution to the toxin issue is to reduce the toxin output in the first place. Obviously, this is much easier said than done and a bit idealistic, but we need to start understanding the adverse effects and trade-offs of "quick" solutions.
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