How did Earth avoid a Mars-like fate? Ancient rocks hold clues: New paleomagnetic research suggests Earth's solid inner core formed 550 million years ago and restored our planet's magnetic field - Science Daily

New paleomagnetic research suggests a more precise estimate for the age of Earth's solid inner core. The research provides clues about the history and future evolution of Earth and how it became a habitable planet, as well as the evolution of other planets in…

Approximately 1,800 miles beneath our feet, swirling liquid iron in the Earth's outer core generates our planet's protective magnetic field. This magnetic field is invisible but is vital for life on … [+5074 chars]

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