Israel's use of 'white phosphorus' scars Gazans  
  Human rights groups say Israel is indiscriminately using white phosphorus in Gaza's densely populated areas.

When ignited, the chemical can burn the flesh off of a person, down to the bone.

Israel says the use of white phosphorus is permitted under international law, although it hasn't openly admitted using the chemical.

Ayman Mohyeldin visits the burns ward of a Gaza hospital and finds many Palestinians badly scarred.

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