Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. The public awareness of science relates to the attitudes, behaviors, opinions, and activities that make up the relations between science and the general public. It integrates various themes and activities such as science communication, science museums, science festivals, science fairs, citizen science, and science in popular culture. Social scientists have devised various metrics to measure the public understanding of science such as factual knowledge, self-reported knowledge, and structural knowledge.