A satellite image of Za'atari camp for Syrian refugees, taken in February 2013. It has become Jordan's fifth largest city - the size of about 600 football fields. Its layout is constantly changing as refugees pick up their tents and move to be closer to f

A satellite image of Za'atari camp for Syrian refugees, taken in February 2013. It has become Jordan's fifth largest city - the size of about 600 football fields. Its layout is constantly changing as refugees pick up their tents and move to be closer to f
Heba Aly/IRIN