Part of human activity related to gaining, classifying and improving knowledge about the world. There exist commonly adopted rules and requirements to make a method scientific. The history itself is one of humanity sciences.
Questions tagged science should cover the history of science in various epochs.
Referring to the process of sharing the knowledge use the education instead.
The philosophy is not a science, as there exist no experiment that could prove that a philosophical theory is false. Providing such experiment is required in scientific method.