BBC:

New research suggests the global decline in wildlife is connected to an increase in human trafficking and child slavery.

Ecologists say the shortage of wild animals means that in many countries more labour is now needed to find food.

Children are often used to fill this need for cheap workers, especially in the fishing industry.

The decline in species is also helping the proliferation of terrorism and the destabilisation of regions.

According to a study in the journal, Science, the harvesting of wild animals from the sea and the land is worth $400bn annually and supports the livelihoods of 15% of the world's population.

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