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Some of the rock in Greenland is among the oldest on Earth — close to 4 billion years old. |

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Mountains in Greenland. |

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A mountain range in Greenland, buried in ice and snow. |

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Mountains carved to horns (like the Matter) by glacial erosion. |

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A mountain the size of an alp, peeking through ice up to two miles thick. |

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Glaciers carving through mountains in Greenland. |

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A mountain range in Greenland. |

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Greenland alps, buried in snow and ice. |

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Vast floes of ice beside Greenland. |

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The snowy, rocky shore of Iceland. |

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While Greenland is billions of years old, Iceland is thousands to millions of years new. |

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A moving sidewalk at Heathrow, changing planes for Paris. |

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Tubes that inspired Apple's "1984" ad, in Charles DeGaulle Airport in Roissy. |

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Going up a tube to a baggage carousel. |

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CDG's reactor core. |










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