The Maya civilization flourished in South America at approximately 2000BC. They developed a unique style of arts and architecture, astronomy, even a written language. Though their writing—and even the ...

Music has held a special role in human society for thousands of years. In ancient China, for instance, sets of bronze bells were played for entertainment and ritual purposes at court. The ...

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† Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, China 650500 ‡ College of Environmental Science and Engineering, Ocean University of China, ...