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host Carl SaganUpworthy
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53% Informative
'Cosmos' host Carl Sagan debunked flat Earthers with a piece of cardboard.
Sagan hosted the original version of TV's " Cosmos " in 1980 .
An ancient Libyan-Greek scholar, Eratosthenes , proved that the Earth was a sphere.
YouGov survey of more than 8,000 Americans found one in six are "not entirely certain the world is round".
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40
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30
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44
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42
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