Long ago, the patch of sky that would become our galactic neighbourhood looked nothing like a galaxy. It was a collection of ...
Proposed dates for the arrival of the first humans in the Americas span more than 100,000 years. At one end sits Cerutti, a site in California that Holen and colleagues dated to about 130,000 years ...
Las fechas que se han propuesto para la llegada de los primeros humanos a América se reparten en una horquilla de más de ...
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