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New World Encyclopedia integrates facts with values. Written by certified experts.

Featured Article: Technology

By the mid-twentieth century, humans had achieved a mastery of technology sufficient to leave the surface of the Earth for the first time and explore space

Technology is a broad concept that deals with a species' usage and knowledge of tools and crafts, and how it affects a species' ability to control and adapt to its environment. In human society, it is a consequence of science and engineering, although several technological advances predate the two concepts. Technology has affected society and its surroundings in a number of ways. In many societies, technology has helped develop more advanced economies (including today's global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products, known as pollution, and deplete natural resources, to the detriment of the Earth and its environment.

Popular Article: Swimming

Open water swimming competition

Swimming is self-propulsion through water, or other liquid, usually for recreation, sport, exercise, or survival. Swimming is consistently among the top public recreational activities. As a formalized sport, swimming is featured in a range of local, national, and international competitions, including every modern Summer Olympics. There are various risks present during swimming; to minimize these risks, most facilities employ a lifeguard to look for signs of distress. With safety features in place, swimming is a healthy activity that can be enjoyed by all ages.

Did you know?

The Great Rift Valley is such a significant physical feature on the earth that it is clearly visible from space (source: Great Rift Valley)

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