Facebook fact check of WSJ book review disagreed with the contents of the book: The Wall Street Journal wrote a book review of "Unsettled: What Climate Science Tells Us, What It Doesn’t, and Why It Matters" by former Obama appointee Steven Koonin. Facebook slapped a fact check on the opinion piece because the book review "repeats multiple incorrect and misleading claims" from the book. The fact check found zero misrepresentations of Koonin's work in WSJ's evaluation of the book. Instead, Climate Feedback's fact check article used WSJ's review as an opportunity to attack Koonin's book with counterarguments and its own review of the book. Fact-checked posts lose exposure on Facebook feeds as they are negatively affected by the platform's algorithm. According to Facebook, users fail to click through a fact-check interstitial to see the post 95% of the time.