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On This Earth

A blog about clean water, interesting toilets and how we can do better for our beautiful world

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Kenyans safely recycle human excreta into fertilizer and help out Lake Victoria

Human nutrient reuse, Watershed health

Top 5 reasons why The Sewage Question still stands (A book review)

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Book Review: White Light casts a dark shadow

Jack Lohmann’s new book reveals our complex relationship with a wondrous element.

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Too good to waste: spring webinars tout the wisdom of recycling human nutrients

1. Toilet Rewind. Monday, April 27th, 12-1 pm PST, 3-4 pm EST Get ready to peek into the fascinating and little-known past when city dwellers kept their local waters clean by recycling and reusing poop. We’ll visit sand toilets of ancient Egypt, earthen-plaster toilets of the Mali empire, nutrient recycling systems of the Aztec’s lake-side…

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Oyster superpower: cleaning polluted water. So what’s the catch?

Watershed health

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

Human nutrient reuse
From pee to coffee: Recycling urine on the space station

Human nutrient reuse

This building gets the gold: Here’s how it converts human urine into an eco-fertilizer

Human nutrient reuse
A better way to go? Here’s 7 takeaways from a toilet museum

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Fit for a pharaoh: Lessons from ancient Egyptian toilets

Sanitation history

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