The earliest sewer systems are from the Yayoi period (300 BC to A.D. 250).

By the year 2000, 60 of the population was connected to a sewer system.

He adds that the limited number of sewer systems has resulted in destruction of ancient mosques.

For example, sewer and water connections increased from 75 of households in 1988 to 98 in 1997.

Where sanitation fees are separate from water tariffs, progressive fee structures could support cross subsidization of sewer connections for the poor.

The use of modern sewage systems began in 1884, with the installation of the first brick and ceramic sewer in Kanda, Tokyo.

Some older industrial cities, particularly in the Northeast and Midwest of the United States, use a combined sewer system to handle waste.

But it would be good if Obama remembered that we dwell not in the Republic of Plato, but in the Roman sewer of Romulus.

Since its inception in 1980, it has helped 2 million people improve their sanitation by installing underground sewer pipes and indoor toilets across Pakistan.

About a week ago, a Chicago newspaper, The Colombus Dispatch, published a cartoon that depicts Iran as a sewer with cockroaches crawling out of it.

Where charges for sanitation services are included in water charges, services for poor households, including sewer connections, could be cross subsidized from progressive water charges.

You would choose to continue to make as much money as possible, while the consumers of your products use the atmosphere as a sewer, with no sewerage charge.

Subsidies for sanitation services and sewer connections, whether direct or cross subsidies, could be justified in terms of the public health and environmental benefits from widespread use of sewerage and waste water treatment.

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Increased variability and intensity of rainfall as a result of climate change is expected to produce both more severe droughts and flooding, with potentially serious consequences for water supply and for pollution from combined sewer overflows.

Evolutionary biologist Paul Ewald drags us into the sewer to discuss germs. Why are some more harmful than others? How could we make the harmful ones benign? Searching for answers, he examines a disgusting, fascinating case diarrhea.

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Some historians have speculated that lead pipes in the sewer and plumbing systems led to widespread lead poisoning, which contributed to the decline in birth rate and general decay of Roman society leading up to the fall of Rome.

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The main argument was that China's main priority was economic growth, and economic growth required political stability.

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Stagnation is the main threat.

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