Page 10 - My FlipBook

INDEX

anaerobic digesters, composting toilets, microorganisms, 7,
20–24, 25, 30, 38 16–17 9, 17
ancient Egyptians, covered lagoons, Mwasaru, Leroy, 5–7,
13–14 21–23 8, 11, 21

biogas, 9–10, 14, 17, fertilizer, 9, 10, 13, 14, nitrogen, 13, 19
20, 21, 22–23, 24, 16, 17, 20, 31
35, 38 fossil fuels, 10 plug flow digesters,
biomass, 8–9 21
bioreactor, 6, 8, 9 Gates, Bill, 28, 33
buses, 32, 35–36 gong farmers, 14–16 Reinvent the Toilet
Challenge, 28–31
California Institute Inca, 14
of Technology smartphones, 32, 39
(CalTech), 29, 30 jobs, 15, 16, 24 smell, 23–24
carbon dioxide, 9, 10, streetlight, 36–39
36 Kenya, 5, 7, 8
China, 14, 21, 30 United Kingdom, 31,
complete mix manure, 13, 16, 35, 36
digesters, 21–22 19–20, 23
methane, 9, 10, 20 World Toilet Day, 28

About the Author

Alexis Burling has written more than 25 nonfiction books

for young readers. She is also a book critic with reviews

published in the New York Times, San Francisco Chronicle,
and other publications. She lives with her husband in the

Pacific Northwest.

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