The Earth is dynamic. Indeed, what we perceive as solid ground beneath our feet is constantly changing.
Physicists say it's possible to use the whole earth as a particle detector, to look for evidence of the mysterious 'fifth force'.
So-called super-Earth planets may have a magnetic shield that could protect any life present from harmful radiation, say researchers.
There's vastly more water in Mars's mantle than previously thought - as much as on Earth, in fact - dramatically raising the chances that the planet might once have sustained life.
Geologists have embarked upon an ambitious project to drill through the earth's crust and extract a sample of the mantle.
The world's deepest drill is currently being prepped to pierce the Earth's enigmatic mantle.