Popular writing can be credible, but it may not be appropriate for your paper. Popular articles are written for a general audience, while scholarly or peer-reviewed articles are written for an expert audience. The process of peer review includes rigorous critique of an article's methods, analysis, and conclusions by other experts in the field who offer anonymous feedback. This feedback provides the means to vet an article by multiple other scholars before it is published.
The following article, from Popular Mechanics magazine, is an example of a popular article.
Tweit S. 2006. Can't we just blow it up? The world's biggest dam removal will return Washington's Elwha River to its free-flowing state. But the colossal three-year project proves there's a lot more to deconstruction than tons of TNT. Popular mechanics (New York 1959). 183(2):64.
The following article, from the journal Frontiers in Environmental Science, is an example of a scholarly resource.
Tickner, David, Parker, Helen, Moncrieff, Catherine R, Oates, Naomi E. M, Ludi, Eva, Acreman, Mike. 2017. Managing Rivers for Multiple Benefits–A Coherent Approach to Research, Policy and Planning. Frontiers in environmental science. 5. doi:10.3389/fenvs.2017.00004.