The Earth’s crust is disappearing right beneath our feet – and most people don’t even realise it. Now, if you’re a geologist, or got a keen interest in how the Earth is put together, then this ...

Just over 4 billion years ago, magma from Earth’s mantle infiltrated a fracture in the young planet’s primordial crust. Over the following aeons, nearly all of the planet’s early crust melted back ...