Photographer David Clifford has captured the world's most dogged runners doing what they love in the most remote and unforgiving environments.
Which buildings made the shortlist for the Design of the Year awards 2013?
The shortlist for the Design of the Year 2013 awards has been announced. We present the best of the shortlist for architecture, from a glassy icicle to a mountain of books, from a building covered in steel to a boat perched on top of a building. What is your favourite?