Magnetic mysteries of Earth's Core. 31 August 2011Last updated at 01:45 By Gaby Hornsby BBC Horizon The magnetic field emanating from Earth's core helps create the Northern Lights Earthquakes, explosions and observations of Earth's ever-changing magnetic field are helping scientists open up a new window on the heart of our planet.
When Jules Verne wrote A Journey to the Centre of the Earth over 100 years ago, he imagined a place of glowing crystals and a turbulent sea, complete with prehistoric animals and giant mushrooms. What was actually beneath our feet was a complete enigma.
Maps and Mapping. Weather. Sustainable_development. Volcano. River. Countries. Habitats. The Fairtrade Foundation. Flood! Climate Change. Maps.