As Gazans struggle to survive in a war zone they face an even longer-term risk that could kill more people than those who've died in the past year of conflict. 

Virtually every house or building bombed in Gaza unleashes a wave of dust or other hazardous materials, including asbestos - that can eventually cause cancers and kill, decades after the conflict is over.

• Guest: Dave Hodgkin, Global Director of Shelter and Settlements, Miyamoto International
• Producer: Anne Barker