I've listened to articles on the same subject from both Science News (SN) and Scientific American (SA)from Audio Books. My experience is that articles come out a month or two earlier on SA, and in greater depth than SN articles. On the other hand SN covers a greater breadth of subjects. If you've ever read a paper SA magazine you know how integral the pictures, illustrations and graphs are for conveying the full content of an article. A picture is worth a thousand words, and the audio version of SA doesn't acknowledge they even exist. The SN articles are at the right level of detail for the audio format.
This is a worthwhile subscription. The only problem is that that the narrator is difficult to understand. He runs sentences together so that meaning is confused and is kind of annoying to listen to.