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Discovery of Ancient Spearpoints in Texas Has Some Archaeologists Questioning the History of Early Americas Archaeologists have discovered two previously unknown forms of spearpoint technology at a site in Texas. The triangular blades appear to be older than the projectile points produced by the Paleoamerican Clovis culture, an observation that's ...
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First "snapshot" of complete spectrum of solar neutrinos About 99 percent of the Sun's energy emitted as neutrinos is produced through nuclear reaction sequences initiated by proton-proton (pp) fusion in which hydrogen is converted into helium, say scientists including physicist Andrea Pocar at the ...
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