Why the high-life can shrink your arms

People all around the world are living the high life. That's to say, living their whole lives at high altitude. This lifestyle has an impact on their bodies, including upon how their bones grow. And one adaptation, Cambridge University's Stephanie Payne has found, is to alter the relative lengths of the arms. Katie Haylor and Chris Smith found out more... Like this podcast? Please help us by supporting the Naked Scientists