One Airport's Trash Is 2 Million Worms' Treasure

Organic waste ends up in a series of 50-foot beds where the worms do their work. Castings (aka worm poop) fall through a screen at the bottom of the bed and will be used as fertilizer on airport grounds.
Organic waste ends up in a series of 50-foot beds where the worms do their work. Castings (aka worm poop) fall through a screen at the bottom of the bed and will be used as fertilizer on airport grounds.