In Season 1 of The Cosmos, Neil D. Tyson details many cases in history when the scientific community rejected an idea that turned out to be correct after further investigation. Which currently rejected ideas are likely to follow a similar trajectory?

https://www.quora.com/In-Season-1-of-The-Cosmos-Neil-D-Tyson-details-many-cases-in-history-when-the-scientific-community-rejected-an-idea-that-turned-out-to-be-correct-after-further-investigation-Which-currently-rejected-ideas-are-likely