I found this article from July 9th 2018: https://www.dailymail.co.uk/sciencetech/article-5935617/YouTube-aims-crack-fake-news-support-journalism.html?fbclid=IwAR3S...

"The company (Youtube) is also testing ways to counter conspiracy videos with generally trusted sources such as Wikipedia and Encyclopedia Britannica.

For common conspiracy subjects - what YouTube delicately calls 'well-established historical and scientific topics that have often been subject to misinformation,' such as the moon landing and the 1995 Oklahoma City bombing - Google will add information from such third parties for users who search on these topics." - [dailymail.co.uk, 7/9/2018]

What is a "conspiracy video?" What are "conspiracy subjects?"