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  2. History of water supply and sanitation - Wikipedia

    en.wikipedia.org/wiki/History_of_water_supply...

    The history of water supply and sanitation is one of a logistical challenge to provide clean water and sanitation systems since the dawn of civilization. Where water resources, infrastructure or sanitation systems were insufficient, diseases spread and people fell sick or died prematurely. Astronaut Jack Lousma taking a shower in space, 1974.

  3. Water storage - Wikipedia

    en.wikipedia.org/wiki/Water_storage

    Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...

  4. Water resources - Wikipedia

    en.wikipedia.org/wiki/Water_resources

    Water resources are natural resources of water that are potentially useful for humans, for example as a source of drinking water supply or irrigation water. These resources can be either freshwater from natural sources, or water produced artificially from other sources, such as from reclaimed water or desalinated water (). 97% of the water on Earth is salt water and only three percent is fresh ...

  5. Microsoft PowerPoint - Wikipedia

    en.wikipedia.org/wiki/Microsoft_PowerPoint

    In contemporary operation, PowerPoint is used to create a file (called a "presentation" or "deck") containing a sequence of pages (called "slides" in the app) which usually have a consistent style (from template masters), and which may contain information imported from other apps or created in PowerPoint, including text, bullet lists, tables ...

  6. Water conservation - Wikipedia

    en.wikipedia.org/wiki/Water_conservation

    Water conservation aims to sustainably manage the natural resource of fresh water, protect the hydrosphere, and meet current and future human demand. Water conservation makes it possible to avoid water scarcity. It covers all the policies, strategies and activities to reach these aims. Population, household size and growth and affluence all ...

  7. History of education in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_education_in...

    The rapid expansion of education past age 14 set the U.S. apart from Europe for much of the 20th century. [ 82] From 1910 to 1940, high schools grew in number and size, reaching out to a broader clientele. In 1910, for example, 9% of Americans had a high school diploma; in 1935, the rate was 40%. [ 190]

  8. United States Department of Education - Wikipedia

    en.wikipedia.org/wiki/United_States_Department...

    The United States Department of Education is a cabinet-level department of the United States government.It began operating on May 4, 1980, having been created after the Department of Health, Education, and Welfare was split into the Department of Education and the Department of Health and Human Services by the Department of Education Organization Act, which President Jimmy Carter signed into ...

  9. Education in the United States - Wikipedia

    en.wikipedia.org/wiki/Education_in_the_United_States

    In the United States, education is provided in public and private schools and by individuals through homeschooling. State governments set overall educational standards, often mandate standardized tests for K–12 public school systems and supervise, usually through a board of regents, state colleges, and universities.

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