This book for elementary readers describes the sequence of inventions that brought us from outdoor cesspits to today's smart toilets, complete with customized user settings. Engaging photos and a running timeline illustrate important ideas and inventions that have changed the way we dispose of our waste. A table of contents, glossary, further resources, and an index are included.
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This book for elementary readers describes the sequence of inventions that brought us from outdoor cesspits to today's smart toilets, complete with customized user settings. Engaging photos and a running timeline illustrate important ideas and inventions that have changed the way we dispose of our waste. A table of contents, glossary, further resources, and an index are included.
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