In the mid 20th century, whole cities' sewage systems safely and successfully used fish to treat and purify their water. Waste-fed fish ponds are a low-tech, cheap, and sustainable alternative to deal with our own shit -- and to obtain high protein food in the process.
Continue reading "Urban Fish Ponds: Low-tech Sewage Treatment for Towns and Cities" »
Can we make modern health care carbon-neutral and maintain the levels of care, pain relief, and longevity that we have come to take for granted?
Illustration: The human powered hospital. By Golnar Abbasi & Arvand Pourabbasi. Taken from Human Power Plant: Human Powered Neighbourhood, Melle Smets & Kris De Decker.
Continue reading "How Sustainable is High-tech Health Care?" »