Consider the Source - Click away from the story to investigate the site, its mission and its contact info.
Read Beyond - Headlines can be outrageous in an effort to get clicks. What's the whole story?
Check the Author - Do a quick search on the author. Are they credible? Are they real?
Supporting Sources? - Click on those links. Determine if the info given actually supports the story.
Check the Date - Reposting old news stories doesn't mean they're relevant to current events.
Is it a Joke? - If it is too outlandish, it might be satire. Research the site and author to be sure.
Check your Biases - Consider if your own beliefs could affect your judgment.
Ask the Experts - Ask a librarian or consult a fact-checking site.
This information is from IFLA or the The International Federation of Library Associations and Institutions