Lessons from the chinampas: How the Aztecs recycled human nutrients for a clean, green city

On the canals of Xochimilco, the remnants of the Aztec chinampas reveal a lost model of urban sustainability. Tenochtitlan, a dazzling, waste-free city, once recycled all its organic material to feed these fertile farms — a lesson in circular ecology for cities today.

Oct 13, 2025
Conservation

Meet the humanure toilet: It recycles poop to grow more food and stops sewage pollution

Over 30 years ago, Joe Jenkins needed a better title for his book on composting human poop. He coined the term “humanure,” self-published The Humanure Handbook, and sparked a global movement promoting simple, affordable, and ecological compost toilets.

Sep 15, 2025
Solutions

A Warm Welcome to Dr. Helen Fox and Our New Steering Committee Members

Ocean Sewage Alliance welcomes a wave of new leadership! Meet Dr. Helen Fox, our new Chair, and five brilliant new Steering Committee members. Discover their diverse expertise and the ambitious vision they bring to our mission of eliminating sewage and wastewater from the ocean.

Sep 1, 2025
Ocean Sewage Alliance

Rush Creek Lodge takes the “waste” out of wastewater

At Rush Creek Lodge near Yosemite National Park, greywater from showers nourishes native landscapes, blending sustainability with scenic beauty. This innovative system saves millions of gallons each year, proving simple reuse can combat drought while restoring native ecosystems. From low-tech cabins to advanced recycling, the lodge models water-smart design.

Aug 11, 2025
Solutions