Some people believe the Earth is flat. They are wrong. Here is why.
Fiveredpears: https://www.youtube.com/user/fiveredpears (a valiant attempt to answer the doubters)
Reds Rhetoric: https://www.youtube.com/channel/UCrHsrhLqowsAIYbaNE7GcBg
(with thanks for the sailboat video)
James Fodor: https://www.facebook.com/Telios-Design-House-181102628573489/photos/?tab=album&album_id=181108895239529 (the excellent artist who helped me with the illustrations)
www.skeptoid.com (the ever-useful Skeptoid podcast, hosted by Brian Dunning)