Adhering to Hyland’s (2019) Interpersonal Model of Metadiscourse, this paper examines the distribution of interactive metadiscourse markers across various topics in popular science commentaries. The corpus comprises 300 popular science commentaries, including 150 magazine articles and 150 newspaper articles, spanning nine years from 2015 to 2024. This period saw increased public debates due to significant scientific discoveries, making the analysis of such engaging content particularly relevant. A corpus of 346,825 running words was analyzed using Antconc software, identifying 24,492 instances of interactive markers. The study shows that subcategories of interactive metadiscourse are frequently used in both popular science magazine and newspaper articles. However, interactive markers appear more frequently in magazine articles than in newspaper articles, indicating that the former has more structured content. Chi-square test results for subcategories of interactive metadiscourse reveal significant differences in the distribution of transition markers, endophoric markers, evidentials, and code glosses between the two corpora. This suggests that ESP and EAP material developers should create more explicit learning resources. Such resources could help language instructors and novice researchers, especially those whose first language is not English, understand how the rhetorical functions of interactive markers influence writing styles across different genres and facilitate successful reader interaction.
