The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.
It is hard to know what is going on over 3000 kilometers beneath our feet, but until recently scientists were fairly confident that they understood the way the iron atoms in the Earth's core packed ...
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Silicon and carbon could explain Earth’s onion-like inner core
Deep beneath our feet, far beyond the reach of drills or submersibles, Earth hides a solid metal heart that behaves in ways geophysicists have struggled to explain. New experiments now suggest that a ...
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