For centuries we have dreamt of reaching the centre of the Earth.
Now scientists are uncovering a bizarre and alien world that lies
4,000 miles beneath our feet, unlike anything we know on the
surface. It is a planet buried within the planet we know, where
storms rage within a sea of white-hot metal and a giant forest of
crystals make up a metal core the size of the Moon.
Horizon follows scientists who are conducting experiments to
recreate this core within their own laboratories, with surprising
Dan Lathrop has built a 3 meter model of the earth's core
which he plans to fill with twelve metric tons of liquid sodium, and
then spin at up to eighty-five miles an hour.
Kei Hirose has managed to recreate the extreme
temperatures and pressures found at the centre of the earth
somewhere rather more convenient to study: his own laboratory.