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Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.

School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, P. R. China Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese ...

Carl Hagenbeck believed that animals should be housed in habitats that mimicked their natural environment. Earlier, he'd followed the same guiding philosophy when exhibiting Indigenous people in ...