Claims about new scientific breakthroughs often appear in the media. if such a claim is made in each of the following, which media source should be considered most reliable?

 If such a claim is made, then the media source that would be considered as most reliable one would be peer-reviewed articles. These are journal articles that were reviewed beforehand by professionals before being published in a scholarly journal. Before it is being published, the author would send it to the editor of the journal who is responsible of sending it o the experts of the topic of the articles as they are considered as the author's peers. These experts would evaluate the paper quality-wise. They check the accuracy and the validity of the methodology. They would also suggest revisions before giving it back to the editor. So, rest assured that the articles that are published are written well and reliable.