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Osterinsel

·26 min·2 clips

The Osterinsel is an isolated island in the South Pacific, home to the monumental Moai statues and over 7,500 people.

The episode begins by describing the Osterinsel's geographical isolation, political affiliation with Chile, and its famous Moai statues. It explains the island's volcanic origin, with three main volcanoes and a lack of coral reefs. The climate is subtropically warm with strong trade winds and an average temperature of 21°C. A 2016 study predicts a threatening drought by 2090 due to climate change, and historical climate shifts over 35,000 years are outlined, affecting vegetation patterns. The flora section notes the island's poor biodiversity, with less than 30 indigenous plant species, and human introduction of plants like sweet potatoes and taro. Archaeobotanical findings reveal deforestation of over 10 million palms around 1010 AD, leading to soil erosion and population decline. The fauna includes limited bird species and introduced mammals like horses, which cause erosion. Settlement history is controversial, with theories from Thor Heyerdahl suggesting South American migrations, but modern DNA analysis of skulls confirms Polynesian descent. Linguistic and radiocarbon dating suggests settlement around 500-1200 AD. The sweet potato's origin from South America and its spread in Polynesia is discussed as evidence of possible pre-European contact. The episode ends with European discovery: pirate Edward Davis sighted the island in 1687, and Dutch explorer Jacob Roggeveen named it on Easter Sunday 1722.

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