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We can thank the ubiquitous Mercator projection for us having no idea how big Africa actually is. https://blogs.scientificamerican.com/observations/africa-is-w

• carapace 7y ago
  World map of human migrations on a Dymaxion projection (no visible distortion of landmass size/shape.) https://en.wikipedia.org/wiki/File:World_map_of_prehistoric_human_migrations.jpg https://en.wikipedia.org/wiki/File:World_map_of_prehistoric_...
• JadeNB 7y ago
  My issue wasn't with the size of Africa (though I have seen that visualisation before, and find it startling as intended), but with the fact that Africa, huge as it is, is part of the world, so that its genetic diversity is part of the world's.