How children play, even in the harshest of environments

How do children play in refugee camps, aboriginal reserves and places ravaged by war?

Mark Neville's photographs show that some of the most inhospitable places on earth are not - contrary to what most of us imagine - a barrier to play.

Across the thousands of miles of territory covered, common threads emerge - kids trundling hoops and wheels in Kenya and Afghanistan, girls playing mother and child, the universal appeal of water, mud, rope and string.