One could easily see how happily we could become obsessive gardeners. How we might stop spreading the asphalt and start spreading the gardens out into the parking lots. How we might pull the discharge pipes out of the lakes, rivers and ocean's.
We might not have a perfect plan for what to do with some things, but pouring them down some drain flowing into Earth's natural waters and poisoning the photosynthetic aquatic life which makes most of all the oxygen on Earth, is definitely not the thing to do with them.
It is time we come out of the coma, climb out of the cars, turn down and off some of this gas burning machinery, and garden the place. Not pave it and poison it. But garden it.