YouTube tutorial producers can make money based on the number of people who view the content. The way it works: advertisers pay Google -- the company that owns YouTube -- to display ads on videos.

Once a channel reaches that threshold, YouTube will review it against its policies to see if the channel is OK to begin making money. YouTube says this is designed to help discourage scam artists ...

YouTube is making millions of dollars a year from advertising on channels that make false claims about climate change because content creators are using new tactics that evade the social media ...