"Debunking" means exposing or proving that a widely believed idea, theory, or belief is false or incorrect. It involves presenting evidence or logical reasoning to show that something is not true. Full definition
I also imagine that this is the reason why there has been such a lot of debunking of climate science since the problem has become mainstream with the fossil fuel industry being represented at every turn in the fight for cuts in greenhouse gases that as yet we have none!!!! (realclimate.org)
This is another one that's been completely and thoroughly debunked by science. (inc.com)
Kerry James Marshall discusses the importance of debunking myths about being an artist, and his 2008 exhibition Black Romantic at Jack Shainman Gallery. (art21.org)