Tarzan no longer swings among the branches in Florida - but his monkeys do. Imported in the 1940's to play "walk-on" parts, their descendants now form the only colony of free-living monkeys in the United States. Florida not only welcomes human tourists from all over the globe, but also hordes of plant and animal visitors which run wild in their new sunny sub-tropical home.
Parrots are colourful visitors to the bird table - a potential disaster in the orange groves. Hitchhiking termites have sneaked in unobserved: overnight they could do millions of dollars' damage to property.
This minestrone of international wildlife is already causing chaos in Florida. The Tarzan monkeys are fun, but could they become a serious health hazard? What warnings are there for the world in general?
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