Using Urine to Grow Plants

by Justin Thomas •

This book, Liquid Gold: The Lore and Logic of Using Urine to Grow Plants, by Carol Steinfeld explains how urine can be utilized as a resource! Urine contains most of the nutrients in domestic wastewater and usually carries no disease risk. Starting with a short history of urine use — from ritual to medicinal to even culinary — Liquid Gold …


Sewage In, Clean Water Out: “Living Machines”

by Justin Thomas •

The people in the photo above are walking through the coils of a “Living Machine” in Emmen Zoo, Netherlands. It is a machine that filters and cleans 260,000 gallons of wastewater per day using nothing but plants. The water that comes out is drinkable.