Manufactured gas plants disappeared from cityscapes long ago. In most cases, so did awareness of their toxic traces. Can neural networks now detect the hazardous remains that elude regulators?

In environmental justice communities, knowledge about air pollution hotspots comes from the ground up. Shouldn't remedies start there too?

The urban landscape is formed by uneven practices of denial and redemption, while stuff stays with us. What are we doing when we are cleaning up?