Weekly Insights for Thinkers

Science  Philosophy  Critical Thinking  History  Politics RW  AI  Physics  •  Evolution  Astronomy 30 Phil Book More…
Science  Phil  Cr. Think  Hist 

STORY

Eve: Haplogroup L

By Michael Alan Prestwood

Sun 11 Jul 2021
Published 5 years ago.
Updated 2 years ago.
Share :
Imagined image: Homo sapien couple, circa 175,000 years ago. By this time, humans all over Africa, the Middle East, Europe, and Asia essentially looked like we look now.

Eve: Haplogroup L

175,000 BCE
200,000 to 150,000 BCE
7,000 Generations Ago

All humans today share a single grandma, circa 175,000 BCE. We know this because all humans alive today share our ancestor’s haplogroup L genes — from our X chromosome. She was one of many thousands of women living in eastern Africa. Many maternal lines survived for many generations but ultimately over time all the other female lineages died out.

Primary Timeline…

Haplogroup L, 23andme.com screenshot.

— map / TST —

Michael Alan Prestwood
Author & Natural Philosopher
Prestwood writes on science-first philosophy, with particular attention to the convergence of disciplines. Drawing on his TST Framework, his work emphasizes rational inquiry grounded in empirical observation while engaging questions at the edges of established knowledge. With TouchstoneTruth positioned as a living touchstone, this work aims to contribute reliable, evolving analysis in an emerging AI era where the credibility of information is increasingly contested.
This Week @ TST
February 18, 2026
»Edition Archive
WWB Research….
1. Story of the Week
Alfred Korzybski
2. Quote of the Week
“We are all tattooed in our cradles with the beliefs of our tribe.”
4. Philosophy FAQ »
Why do people confuse explanations with reality?
5. Critical Thinking FAQ »
Is the Split in the Idea of Ideas the Same as Kant’s?
6. History FAQ!
How did Copernicus show both the power and limits of models?
Bonus Deep-Dive Article
The Material World Split
Scroll to Top