During my enforced leisure time these last few months, my YouTube watching has increased somewhat, and I've come across the work of, amongst others, SciManDan, a fairly laid-back guy who tries to contain his frustration with the nuttier end of the conspiracy industry, whose videos he reviews.
He does a piece called "Flat-Earth Fridays", and it's amazing quite what a range of nonsense, and indeed non-science, is believed by these folks. Some are religious extremists (one such had a proof of Flat-Earth knowledge given to him in a vision), others are just very bad at physics. Either way, I'm left wondering just how so many people seem happy to turn their backs on centuries, millennia even, of knowledge and discovery.