The sparkling future of the troubled toilet? Chelsea Wald investigates

FINALIST FOR THE 2022 NASW SCIENCE IN SOCIETY JOURNALISM AWARDS (BOOK CATEGORY)

LONGLISTED FOR THE 2022 AAAS/SUBARU SB&F PRIZE FOR EXCELLENCE IN SCIENCE BOOKS (YOUNG ADULT SCIENCE BOOK CATEGORY)

ONE OF SCIENCE NEWS MAGAZINE’S FAVORITE BOOKS FOR 2021

ONE OF BUZZFEED’S 25 GREAT BOOKS YOU MAY HAVE MISSED IN 2021 

From an award-winning science journalist, PIPE DREAMS is a lively, informative, and humorous deep dive into the future of the toilet—from creative uses for harvested “biosolids,” to the bold engineers dedicated to bringing safe sanitation to the billions of people living without this necessary infrastructure.

Most of us do not give much thought to the centerpiece of our bathrooms, but the toilet is an unexpected paradox. On the one hand, it is a modern miracle: a ubiquitous fixture in a vast sanitation system that has helped add decades to human lifespan by reducing disease. On the other hand, the toilet is also a tragic failure: less than half of the world’s population can access a toilet that safely manages body waste, including many right here in the United States. And it is inefficient, squandering clean water as well as the nutrients, energy, and information contained in the stuff we flush away. While we see radical technological change in almost every other aspect of our lives, we remain stuck in a sanitation status quo—in part because the topic of toilets is taboo.

Fortunately, there’s hope—and Pipe Dreams daringly profiles the growing army of scientists, engineers, philanthropists, entrepreneurs, and activists worldwide who are overcoming their aversions and focusing their formidable skills on making toilets accessible and healthier for all.

This potential revolution in sanitation has many benefits, including reducing inequalities, mitigating climate change and water scarcity, improving agriculture, and optimizing health. Author Chelsea Wald takes us on a wild world tour from a compost toilet project in Haiti, to a plant in the Netherlands that harvests used toilet paper from sewage, and shows us a toilet seat that can watch your poop for signs of illness, among many other fascinating developments.

Much more than a glorified trash can, the toilet, Wald maintains, holds the power to help solve many of the world’s problems, if only we can harness it.

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About

Chelsea Wald

I am a freelance journalist who writes about science, the environment, health, technology, and anything else that delights, disturbs, or distracts me. Currently, that means everything about toilets.

After graduating from Columbia University with a bachelor’s in astronomy, I traveled to Chile on a Fulbright grant to study ancient Andean cosmology. I returned to the United States and earned a master’s in journalism from Indiana University. Before launching my freelance career, I worked at a local NPR affiliate,  physics news and blogging sites, publications for talented young people, and a one-minute radio show about science. I now live in The Hague and report from around the world. 

Raves

Praise for Pipe Dreams

Science News

April 10, 2021May 14, 2025

Christie Aschwanden, author of Good to Go

April 4, 2021May 14, 2025

Meera Subramanian, author of A River Runs Again

April 4, 2021May 14, 2025

Sam Kean, author of The Disappearing Spoon

April 4, 2021May 14, 2025