Topic: Clovis (New Mexico)
The discovery of 13,000-year-old stone projectiles and fossilized feces indicates the existence of a second founding culture in the Americas, in addition to the Clovis culture, say researchers.
Buried super-cooled electrical cables may replace towering transmission lines and carry solar and wind energy efficiently over long distances.
12/31/2009 10:57 am
08/27/2008 01:00 am