The Haitian president, Rene Preval, has made an urgent appeal for more tents to house up to a million people made homeless by the earthquake that struck Haiti two weeks ago.
Mr Preval said 200,000 tents were needed before the expected start of the rainy season in May.
Aid agencies are still struggling to get food and water to survivors of the earthquake.
For some aid workers, the terrifying nature of what happened during the quake is all too real.
Jens Kristensen, a Senior Humanitarian Officer with the UN mission in Haiti, survived for five days under the rubble of a collapsed building.
And he's now back at work.
First broadcast 26 January 2010
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