Flat Earthers believe that the Earth is not  spherical, but rather a flat disc and the Sun and the Moon are also flat discs that circle above the Earth. According to them the edges of the world are surrounded by a wall of ice, which is what we know as Antarctica. And as for the pictures of the Earth from space - they are all fake, part of a huge conspiracy to hide the truth.

The earliest cultures that believed in a flat Earth were the ancient Egyptians, Babylonians, and Greeks. They had different models that depicted the Earth as a flat surface, often supported by pillars or resting on a giant animal. But not all ancient Greeks shared this belief.

Why have people started believing in this again? And why do some people still believe in the flat Earth theory despite all the evidence that contradicts it? In under 3 minutes, we answer your questions!

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A podcast written and realised by Amber Minogue.

In partnership with upday UK.

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