jan 302013
 
Prehistoric Humans Not Wiped Out by Comet

  Comet explosions did not end the prehistoric human culture, known as Clovis, in North America 13,000 years ago, according to research published in the journal Geophysical Monograph Series. Dennis Stanford with Clovis stone points from the collection of the Smithsonian’s National Museum of Natural History. The Clovis culture is named after the town in [continue reading]

mei 112012
 
Ancient Mayan workshop for astronomers discovered

Archaeologists have found a small room in Mayan ruins where royal scribes apparently used walls like a blackboard to keep track of astronomical records and the society’s intricate calendar some 1,200 years ago. Four numbers, written in columns on the house’s north wall, are Maya “Long Count” dates—one of which was nearly 7,000 years in [continue reading]