Flat Earth rising: meet the people casting aside 2,500 years of science

Though not a new phenomenon, flat Earth theory has enjoyed a huge resurgence recently. A YouGov poll indicated that a third of Americans aged 18 to 24 were unsure of the shape of our planet, in spite of scientific proofs from Pythagoras to Nasa. Why has this happened now, and what does it tell us about society today? Subscribe to The Guardian on YouTube ► Today in Focus podcast ► Support the Guardian ► Sign up for the Guardian documentaries newsletter ► The Guardian ► The Guardian YouTube network: Guardian News ► Guardian Football ► Guardian Sport ► Guardian Culture ► #flatearth #conspiracy #globeearth #nasa #pythagoras #science