This is an idea used by Casey Fiesler in some of her tech ethics courses. Let’s keep a spreadsheet of current news articles that relate to data ethics issues. These can be articles that explicitly highlight an ethical concern, or they can just be an article about technology that raises ethical concerns for you (even if not mentioned in the article).
Everyone in the certificate course should try to add one article per week to the spreadsheet, and at the end we can see what happened during the 6-week duration of the course: