"Clean Eating"是欧美正在流行的趋势，新鲜、自然的食材能"清洁"身体，但事实果真如此吗，新陈代谢专家Giles Yeo博士深入调查。 Dr Giles Yeo investigates the latest diet craze and social media sensation - clean eating. Giles cooks with Ella Mills and sifts through the claims of the Hemsley sisters.

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 results.