Ancient Rocks Hold Clues To How Earth Became A Habitable Planet And Avoided A Mars-Like Fate - ABP Live

According to a new study, the solid inner core of the Earth formed 550 million years ago and restored the magnetic field of the planet. This unravels how Earth became a habitable planet.

Swirling liquid iron in the outer core of Earth creates the protective magnetic field around our planet. The iron flows approximately 1,800 miles beneath the surface of Earth. The invisible magnetic … [+7672 chars]

full article...