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Science from the Latin word scientia , meaning "knowledge"  is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Modern science is typically divided into three major branches that consist of the natural sciences e. There is disagreement,   however, on whether the formal sciences actually constitute a science as they do not rely on empirical evidence. Science is based on research , which is commonly conducted in academic and research institutions as well as in government agencies and companies. The practical impact of scientific research has led to the emergence of science policies that seek to influence the scientific enterprise by prioritizing the development of commercial products , armaments , health care , and environmental protection.