Journey to the Centre of the Earth

Have a look at this BBC guide to the centre of the earth.

http://www.bbc.com/future/bespoke/story/20150306-journey-to-the-centre-of-earth/index.html

Heart of Earth's Inner Core revealed

Scientists say they have gained new insight into what lies at the very centre of the Earth.

Research from China and the US suggests that the innermost core of our planet has another, distinct region at its centre.

The team believes that the structure of the iron crystals there is different from those found in the outer part of the inner core.

The seismic wave data suggests that crystals in the "inner inner core" are aligned in an east-to-west direction - flipped on their side, if you are looking down at our planet from high above the North Pole.

Those in the "outer inner core" are lined up north to south, so vertical if peering down from the same lofty vantage point.

Click here to read more on the BBC News website.

Thanks to Y13 Geog for the link