Scientists in New Zealand are studying the past behaviour of Earth's magnetic field using the stones that line Maori steam ovens.
[url=http://www.bbc.co.uk/news/science-environment-20520454]More...[/url]
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Scientists in New Zealand are studying the past behaviour of Earth's magnetic field using the stones that line Maori steam ovens.
[url=http://www.bbc.co.uk/news/science-environment-20520454]More...[/url]