10. April 2026    535

Human urine may be one of the world’s most overlooked resources. Every person produces about 500 liters of urine per year, and it's rich in nitrogen, phosphorus, and potassium, the same nutrients found in chemical fertilizers farmers rely on to grow food. In fact, the nutrients from one person’s annual urine production can fertilize enough land to grow up to 270 kg of rice or 180 kg of wheat.

Despite its potential, urine recycling remains a rare practice globally. Why? Barriers like infrastructure gaps, technological hurdles, economic uncertainties, and social perceptions hold us back. But what if we could turn this "waste" into a circular economy, boosting sanitation, reducing pollution, and feeding communities, all at once?

  24. February 2025    3292

Disclaimer: To read the article in Spanish click here.

The history of our struggles is intertwined with the management of our resources and the care of our land. In the face of the climate crisis, social inequalities and dependence on extractivist systems, it is time to look to our roots and adopt technologies that harmonize with nature. The implementation of dry toilets is not only a technical solution, but an act of cultural resistance and affirmation of sovereignty.

  10. February 2025    3822

“What a Shit Movie!” - When I say this most people would probably assume I didn’t like it, since the term “shit” is commonly understood to have a negative implication. This captures the essence of Holy Shit, which challenges us to reshape our understanding and our relationship to our own feces.

  6. January 2025    7785

The history of the advancements in sanitation and hygiene is often viewed through a Western lens, yet some of the most significant contributions came from the Middle East during the Islamic Golden Age. Two famous figures of this era, Al-Razi and Ibn Sina, made groundbreaking strides in the understanding and promotion of hygiene. Their works not only influenced their contemporaries but also laid foundational principles that influenced even our modern perception of health and hygiene.

  7. May 2024    7485

Kiritimati Island is a unique place. Situated within the Line Islands group of the Republic of Kiribati, an island country spanning almost 3.5 million km2 of ocean, it isn’t easy to find on a map. The closest international airport (other than its own) is in Honolulu – more than 2,000 km away. The capital of its own country is even farther away. Despite being  the largest coral atoll in the world, as of 2020 only 7,369 people live there.

  7. September 2023    4262

Yazd, a city nestled in the heart of Iran's central desert, holds a unique historical treasure - its ingenious water and sewage system. Dating back centuries, this remarkable system not only provided clean water and efficient sewage management but also demonstrated the resourcefulness and forward-thinking of its inhabitants. In this blog post, we delve into the historical background of Yazd's water and sewage system, explore what makes it unique, and uncover the valuable lessons it offers us in today's world. 

  17. July 2023    1165

“Looking back, one can almost pinpoint the moment when the urban sanitation orthodoxy in Lusaka, Zambia began to falter. It involved a diagram, compact enough to fit on a single sheet of paper, featuring roughly a dozen red and green lines of varying thickness which snaked their way across the page.