The three-minute video below is useful for a general understanding of the difference between scholarly peer-reviewed articles and articles from popular magazines.  For recognizing scholarly peer-reviewed articles in the sciences, be especially alert for the following:

• Article reports original research findings to the academic community.
• Article written by the scholar(s) who has/have done the research.
• Will see subheadings like: Abstract, Literature Review, Methodology, Research Results or Findings, Analysis or Discussion, Conclusions.
• Sources are always cited, and they are cited at the end of the article.