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Why do Koreans like cosmetic surgery?
Korea has a higher rate of plastic surgery than any other country in the world, one in 77 people has used cutlery for beauty.
High Frequency Sound Waves
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Articles about High Frequency Sound Waves
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Science invention
Ultrasonic scanner in smart phones
American scientists have invented the world's first ultrasound scanner for smartphones. This may be a revolution in health care for developing countries.