New Conrete Clears the Air

August 17, 2008 By Peter

In the Dutch province of Overijssel, a stretch of road has been paved with a surface of air-purifying concrete. Meant to fight pollution, the road consists of concrete paving stones spiked with a titanium dioxide-based additive. In sunlight, this additive should bind to nitrogen oxide particles spewed from car exhausts and converts them into friendly nitrates.

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