General Category > Science, Technology and Knowledge
What is the Most Incredible Fact You Can Post Here?
Wingnut:
--- Quote from: Hoodat on July 20, 2025, 08:07:40 pm ---Incredible fact #2 - The Thermos® is the greatest invention ever.
--- End quote ---
How does it know?
IsailedawayfromFR:
Infinity is incomprehensible, whether in space or time
corbe:
libertybele:
Everyone with blue eyes inherited a tiny genetic "switch" that dilutes brown pigment in the iris. This mutation, found in all blue-eyed people, emerged 6,000–10,000 years ago, meaning they all share one common ancestor.
"Originally, we all had brown eyes," said Professor Hans Eiberg from the Department of Cellular and Molecular Medicine. "But a genetic mutation affecting the OCA2 gene in our chromosomes resulted in the creation of a "switch," which literally "turned off" the ability to produce brown eyes." The OCA2 gene codes for the so-called P protein, which is involved in the production of melanin, the pigment that gives color to our hair, eyes and skin. The "switch," which is located in the gene adjacent to OCA2 does not, however, turn off the gene entirely, but rather limits its action to reducing the production of melanin in the iris -- effectively "diluting" brown eyes to blue.
ChemEngrMBA:
--- Quote from: corbe on July 20, 2025, 08:25:38 pm ---
--- End quote ---
Outstanding post, truly.
I thought it was 50,000 years but your figure of 200,000 is just as good, maybe better.
Given the randomness and number of collisions, there is a huge range of values and the best we can do is try to figure the mean time span.
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