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Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...
Early human habitations were often built next to water sources. Rivers would often serve as a crude form of natural sewage disposal. Over the millennia, technology has dramatically increased the distances across which water can be relocated. Furthermore, treatment processes to purify drinking water and to treat wastewater have been improved.
The link between water and disease was still not well established and in 1873 the president of the New York board of health declared that "although rivers are great natural sewers, and receive the drainage of towns and cities the natural process of purification, in most cases destroys the offensive bodies derived from sewer and renders them ...
Manual-control chlorinator for the liquefaction of chlorine for water purification, early 20th century. From Chlorination of Water by Joseph Race, 1918. The first continuous use of chlorine in the United States for disinfection took place in 1908 at Boonton Reservoir (on the Rockaway River), which served as the supply for Jersey City, New ...
NEW YORK (AP) — Researchers have uncovered a simple structure from the Stone Age that may be the oldest evidence yet of early humans building with wood. The construction is basic: a pair of ...
Plentiful water and the enrichment of the soil due to annual floods made it possible to grow excess crops beyond what was needed to sustain an agricultural village. This allowed some of the people to engage in non-agricultural activities, such as the construction of buildings and cities (the root of the word "civilization"), metalworking, trade ...
Modern humans, 200,000 to 300,000 years ago, were really adaptable, spanning from the Arctic tundra to the Sahara desert. Other things are still unknown about Homo erectus, like if they had a ...
In addition to retaining irrigation water, building thick ridge borders likely helped prevent wind and water erosion, minimize evaporation, and regulate temperature. [12] [43] Women tended to the waffle gardens hand-watering plants in the grids. They would carry water from a source, such as a well or river, in earthen jars balanced on their heads.