Warfare

Space wars: the new arms race above our heads

Forget the traditional battlegrounds of land, sea and air. Rapid developments in technology and our reliance on satellites for everything from communication to navigation are pushing conflicts into a new arena: outer space.

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Print your own body parts

For people who are missing limbs, 3D printing can make new prosthetics – faster, cheaper and better. It could transform mobility for millions around the world, reports Ian Birrell.