Helping the homeless

By 2030, the number of city-dwellers globally is expected to shoot up to five billion - with the biggest growth in Africa and Asia. Yet more than 100 million people worldwide are homeless, with 1.6 billion estimated to be living in shelter.

Hong Kong is one of the world's richest cities but one in five people live in poverty. Meanwhile in Cape Town, in South Africa, 7,383 homeless people populate the city.

Juliana Liu visited a social enterprise in Hong Kong aimed at giving single mothers a home rather than a square patch of ground, while Karen Schoonbee met an innovator in Cape Town, South Africa, whose designs helps the homeless keep warm.

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