High above our heads, a silent battle is unfolding within Earth's magnetic shield. For decades, scientists have tracked "killer electrons"—ultrafast particles capable of piercing satellite armor and ...

Imagine a source of energy that produces no carbon emissions, lies beneath our feet, and could power human civilization for millennia. A growing body of research now suggests that such a resource ...

Add Yahoo as a preferred source to see more of our stories on Google. A hidden source of clean energy could power the planet for more than a hundred thousand years if tapped into, according to new ...