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![](http://upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/150px-Question_book-new.svg.png)
All of the statements below happen to be true, but only some are adequately supported by a reliable source. Can you guess which ones?
On January 18, 2012, the English Wikipedia conducted a 24-hour blackout to protest the Stop Online Piracy Act, impacting 162 million readers.[1]
- ^ Lee, Dave (19 January 2012). "Sopa and Pipa protests not over, says Wikipedia". BBC News. Retrieved 6 March 2024.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Yes_Check_Circle.svg/20px-Yes_Check_Circle.svg.png)
The Journal of the American Medical Association estimated that $101 billion was spent in 2013 on the preventable disease of diabetes, and another $88 billion was spent on heart disease.[1]
- ^ Dieleman, Joseph L.; Baral, Ranju; Birger, Maxwell; Bui, Anthony L.; Bulchis, Anne; Chapin, Abigail; Hamavid, Hannah; Horst, Cody; Johnson, Elizabeth K. (2016-12-27). "US Spending on Personal Health Care and Public Health, 1996-2013". JAMA. 316 (24): 2627–2646. doi:10.1001/jama.2016.16885. ISSN 0098-7484. PMC 5551483. PMID 28027366.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Yes_Check_Circle.svg/20px-Yes_Check_Circle.svg.png)
Human eye color is determined by the composition of two parts of the iris. Both pigmentation and Tyndall scattering contribute to the ultimate coloration.[1]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/No_Cross.svg/20px-No_Cross.svg.png)
At a 2015 Peking Duk concert, a fan managed to get backstage after tricking a security guard into thinking he was Reuben Styles' step-brother by editing the band's Wikipedia page.[1]
- ^ Russell, Jennifer (4 December 2015). "Man tricks security into letting him backstage by editing Wikipedia". Daily Mail.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/No_Cross.svg/20px-No_Cross.svg.png)
Less than 3 percent of the geotagged articles on Wikipedia are for places in Africa, despite the continent having 14 percent of the world's population.[1]
- ^ Guerrini, Federico (25 July 2018). "Wikipedia Releases Transparency Report And Pledges To Improve Diversity". Forbes.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/No_Cross.svg/20px-No_Cross.svg.png)
The Center for Urban Forest Research estimates that shade from the 26,000 trees in Claremont, California, saves the city more than 2.1 million kilowatt-hours of electricity per year in reduced air conditioning costs, equivalent to more than $468,000 in savings.[1]
- ^ Bramlett, Matthew (29 March 2019). "Managing Claremont's urban forest". Claremont Courier. Archived from the original on November 28, 2020.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Yes_Check_Circle.svg/20px-Yes_Check_Circle.svg.png)
A 2008 culture jamming operation placed "citation needed" stickers on advertisements around New York City.[1]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/No_Cross.svg/20px-No_Cross.svg.png)
Although Stanford University has no official school mascot, each year a student is chosen to be the "Stanford Tree" and wears a costume of their own creation.[1]
- ^ Beyer, Brooke (3 April 2020). "43rd Stanford Tree talks stunts, branching out". The Stanford Daily.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Yes_Check_Circle.svg/20px-Yes_Check_Circle.svg.png)
In May 2019, Leo Burnett Tailor Made, a marketing agency for The North Face Brazil, revealed that they had surreptitiously replaced photos of popular outdoor destinations on Wikipedia with photos featuring North Face products in an attempt to get those products to appear more prominently in search engine results.[1]
- ^ "The North Face platzierte Schleichwerbung bei Google und Wikipedia". Der Spiegel (in German). 31 May 2019.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Yes_Check_Circle.svg/20px-Yes_Check_Circle.svg.png)
It is not possible to preserve the environment while continuing to consume meat at current levels.[1]
- ^ Foer, Jonathan Safran (21 May 2020). "The End of Meat Is Here". The New York Times.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/No_Cross.svg/20px-No_Cross.svg.png)
Jonathan Safran Foer believes that it is not possible to preserve the environment while continuing to consume meat at current levels.It cannot be used without attributing the statement to Foer, as was done above.