Geography

Rivers, lakes and the measurements behind 'longest' and 'largest'.

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  The Largest Lakes in the World, by Area, Depth and Volume

  The Caspian Sea, Lake Superior, Lake Victoria and Baikal: the world's largest lakes ranked three ways, with the definitional arguments that change the answer.

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  The Longest Rivers in Africa: Top 10 and Why Lengths Vary

  The Nile, Congo, Niger, Zambezi and the rest of Africa's ten longest rivers, with lengths, outlets and countries, plus why published lengths disagree.