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Dec 8, 2014 12:40 PM ET // Becky Oskin, LiveScience
With the Earthscope project complete from California to Maine, scientists have sharpened their view of the mysterious mantle structures underneath the United States.
Jun 18, 2014 04:00 AM ET
Guess what Earth's been hiding from us, way down in its belly? Water! Lots and lots of water.
Jun 16, 2014 09:15 AM ET // Stuart Gary, ABC Science Online
New study challenges the idea that the rate of plate movement remains stable.
Jun 12, 2014 03:40 PM ET // Joseph Castro, Contributor
Deep within the Earth's rocky mantle lies oceans' worth of water locked up in a type of mineral called ringwoodite.
Dec 5, 2013 08:00 AM ET // Becky Oskin, LiveScience
A dense crystalline 'rain' falling into Earth's mantle could explain how a mysterious seismic boundary forms beneath the crust.
Sep 15, 2011 03:03 PM ET // Tim Wall
Diamond inclusions indicate that Earth's carbon cycle extends from the surface to the deep lower mantle.
Mar 10, 2011 06:42 PM ET // Christina Reed
NASA geophysicists find natural cycles to Earth's warming that correlate to movement of liquid iron in Earth's outer core -- up until 1930.