Hangi – helping to reveal the mysteries of the Earth’s magnetic field

By Rebecca Priestley In Science

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4th August, 2012
On a chilly Sunday in June, a group of scientists gathered around a mound of dirt in a grassy field. After some muttered consultation, Victoria University geophysicist Gillian Turner picked up a shovel and began digging. Big puffs of steam escaped into the air. Soon, brown stalks of charred ponga fronds became visible, a flame licked upwards, then sacks were lifted to reveal metal racks filled with foil-wrapped packages. A hangi. But Turner wasn’t that interested in the chicken, pumpkin and kumara packed inside the foil lunch containers – she was there for the rocks lining the hangi pit. ...

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