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By Louise Molloy The crust under your feet – it’s on the move! But we’re not talking about the edge of your toast. This crust is the outer layer of our planet. The Earth’s crust has been on the move for millions, and even billions, of years. There’s an exciting new theory looking at why…

Here’s a great excuse for a trip up a mountain! Grab some bottles and learn why it’s hard to breathe at the top of tall mountains.

Are you at the top of your game? We’ll put you to the test looking at extreme heights and depths, plus sizes, shapes and speeds in this week’s quiz.