public water supply

Blue Gold: World Water Wars (2010)

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Wars of the future will be fought over water, as they are today over oil, as the source of all life enters the global marketplace and political arena. Corporate giants, private investors, and corrupt governments vie for control of our dwindling fresh water supply, prompting protests, lawsuits, and revolutions from citizens fighting for the right to survive.

Grade Level:

High

Length:

01:30

Ancient Roman Technology

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To this day, the Romans are admired for their technological know-how and massive, well-designed public works projects. Learn how the Romans ensured a clean water supply for their cities, used volcanic ash to make long-lasting concrete, created the world's first professional army, and much more. Photographs of structures that are standing to this day help demonstrate the ingenuity of Roman engineers and the skill of Roman workers.