Below is a list of websites that review specific news stories and claims. You can (and should!) also refer to Wikipedia, Google, Twitter, and LinkedIn to look up quotes and examine the professional qualifications held by authors of articles.
Retraction Watch is a blog that reports on the retraction of scientific papers. They announce when a paper has been retracted and give the reasons for the retraction
FactCheck.org is brought to you by the Annenberg Public Policy Center of the University of Pennsylvania. This site is dedicated to checking up on claims made by major political players on TV, in debates or in interviews and news releases.
Retraction Watch is a blog that reports on the retraction of scientific papers. They announce when a paper has been retracted and give the reasons for the retraction.