Bolivia's abandoned children

In Bolivia, a weak economy and a shortage of jobs means some parents are moving abroad to find work and earn money for their families. But, in many cases, their children are being left behind with no one to care for them.

There are telephone shops all over Bolivia, places where people - often too poor to have a phone of their own - go to make their calls.

They are full of rickety plastic booths and are abuzz with the sound of locals calling long distance.

Frequently, they are calling the people who clean houses, look after other people's children, pick fruit, and work on construction sites in countries like Spain, Italy, Argentina and Britain.

These migrant workers are the fathers or mothers of youngsters like Carlita.

Her mother left their home in Santa Cruz a year ago and now works as a domestic servant in Madrid.