Earth’s First Crust Was Continental – Long Before Plate Tectonics Began
New research suggests that Earth's first crust, formed over 4.5 billion years ago, already carried the chemical traits we ...
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Alert: An entrepreneur and three others launch on a private SpaceX flight over Earth's poles
CAPE CANAVERAL, Fla. (AP) — An entrepreneur and three others launch on a private SpaceX flight over Earth's poles.