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Unknown Earth – our planet’s seven biggest mysteries

From: New Scientist, No 2675 (27 September 2008), p28-35.

Article outlining seven fundamental questions about Earth:

  • how come Earth got all the good stuff?
  • what happened during Earth’s dark ages?
  • where did life come from?
  • why does Earth have plate tectonics?
  • what is at the centre of the Earth?
  • why is Earth’s climate so stable?
  • can we predict earthquakes and volcanic eruptions?

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