aside from the issues that other commenters have addressed, I think the titles are too short to accurately describe the subject matter

I can see what they were going for but the titles do not match the paragraphs well enough for me

misleading titles, for things presented as myths, (with corrections in parenthesis):

• Multiple personalities (exists as MPD)
• The Vomitorium (exists)
• Black holes (exists)
• Different tongue parts (exists)
• Left & right brain (exists)
• Evolution is a 'theory' (true)

I'd write these as:

• Schizophrenia does/should not mean multiple personalities
• People did not vomit in vomitoriums
• Black holes are not literal holes*
• The tongue does not taste in distinct places
• Both brain hemispheres can learn the same functions/talents
• Evolution matches our current data the best; scientific theories are not just conjecture**

*I don't think this is really correct either, but that is an issue outside of the scope of just the titles

**I am not too confident on this rewrite, I'm not sure I could make it short and have good quality, but you could go with either side of the semicolon for a shorter single title

There were other issues I had with the titles, but I felt that I was too unsure about them to present them here