▽SPACE.com -- Something Amazing Every Day ●04/07 02:57 North America is 'dripping' down into Earth's mantle, scientists discoverBy Sascha Pare published 6 April 25Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust above it to "drip" and suck down rocks from across the continent.Earth'Doctor Who' Season 2 premieres this week with a robot revolution and AI terrorsBy Jeff Spry