Earth Log 0019 The Short Story of How We Spread Across the Earth

This is the short, citation-free version of the How We Spread Across the Earth arc — the three-part story of how our species, born on a single continent, came to stand on all of them. It compresses those three entries — The African Dawn (#0016), Out of Africa (#0017), and Into the New World (#0018) — into one self-contained narrative. It is the second entry in the plain-prose companion strand that began with The Short Story of How We Came About (#0011), and it does for the peopling of the Earth what that earlier primer did for the long story of how life and mind came about in the first place.

For readers who want to dig in, the detailed entries — #0016 through #0018 — remain in the corpus, with the sources, the disputed claims, and the working uncertainties intact.