For me science is defined by the scientific method, which is more specific than that Science council suggestion. They say "a systematic methodology based on evidence", but that doesn't go far enough. You can think you are basing your conclusions on evidence, when you are actually suffering from confirmation bias. The key to the scientific method is not the confirmation of hypotheses but their elimination. You develop two or more hypotheses which differ in some significant way, and you use that difference to design an experiment which distinguishes between them.