nbc's holly gorani has more for us on what the children of gaza are now facing. >> reporter: in rafahan runs down an alleyway carrying an injured toddler. the girl's name is rakim, she is unconscious. the man claims into an ambulance with her. the rubble of the little girl was pulled from has become a familiar scene and gaza. air, collapsed buildings, chaos. the war here has killed and wounded nearly 15,000 children in a little over two months according to usf. the u. n.'s tom white has remained in gaza throughout. >>> children, after children, after children who lie in the hospital corridors with horrific injuries. lots of them serious blast injuries. they've lost limbs. >> reporter: it's not just the injured, it's the disabled and homeless. this u. n. run school in southern gaza has become a refuge for orphans and kids with complex medical needs. some several times displaced, like 90% of the strip. sometimes, it's the adult who cries as the children stay silent, or watch in four as building's collapse around them. leaving children covered in debris and dust. there aren't enough emer