First 3D map of Earth's interior shows where volcanoes come from
 

It's no secret that Earth's volcanoes are the result of magma rising through the planet's mantle, but have you wondered just where those 'roots' run? UC Berkeley can provide an answer. It just created the first-ever detailed 3D map of the Earth's i...

http://www.engadget.com/2015/09/06/e...&ncid=rss_semi