Flying into Papua New Guinea, the plane glides smoothly over kilometre after kilometre of rainforest. Trees appear like a broccoli carpet beneath you, then you suddenly descend, and the forest thins out until the sea, then the capital city of Port Moresby is visible, its shanty towns juxtaposed with modest office towers. The visual summary of the country as seen from the air is succinct: vast areas of wild, natural beauty, with a little modern development, and notable poverty.

The history of Papua New Guinea (PNG) is a long one. Archaeologists believe humans began inhabiting the region as hunter-gatherers 60,000 years ago. Later, gardening and forest management was practised, and today’s key dietary staples include the foodstuffs that would have been gathered over the centuries, including bananas, which are thought to have been first cultivated here.