Sewers are the hidden backbone of modern cities. In this video, I explain how sewer systems work, why they’re so important, and how engineers designed them to keep waste out of sight - and out of mind ...
Philstar.com on MSN
When sewers work
The recent inauguration of the Aglipay Sewage Treatment Plant in Mandaluyong, attended by no less than President Marcos himself, drew attention to sanitation, an issue most Filipinos notice only when ...
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