According to the Oxford English Dictionary, Critical Thinking is "the objective, systematic, and rational analysis and evaluation of factual evidence in order to form a judgement on a subject, issue, etc."
Critical Thinking is one of the key skills necessary for developing strong Media and Digital Literacy abilities. It is essential that every media/digital source is objectively and systemically evaluated for accuracy and truth. Try to use tools such as the Critical Thinking Cheatsheet to evaluate the information being analyzed.
Source: National Geographic Blog