Scientists Plan Billion Dollar Journey To The Center Of The Earth

Though humans have been able to send man to the moon and even a giant-sized robot all the way to Mars, they have yet to explore an area that lies just 6km (3.7 miles) beneath the surface of the sea floor - The Earth's Mantle, a 3,000 km thick highly viscous layer that sits between the outer crust that we reside upon and the Earth's core. However, if some scientists have their way that is about to change.