Question: What is your favourite scientific myth that you'd like to debunk?

Sam Gaughan answered on 10 Jun 2019:

Most scientific myths are harmless, and only really affect the person who believes them, but the one I really want to debunk would be about vaccines being harmful, or causing diseases – they literally do the opposite! This one is especially important because it can be very dangerous for children if their parents don’t let them get vaccinated, and it doesn’t just affect that person, some people are allergic to vaccines so they depend on everyone else being immune to a disease (this is called herd immunity.)