Feature

  1. Earth Sciences

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  2. Science on the Air

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  3. Front Matter

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  4. A Powerful Way to Make an X-Ray Laser

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  5. Congress Toughens Drinking Water Rules

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  6. Space Commission Poses Future Agenda

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  7. Serendipity: Supernova in Centaurus A

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  8. Efficient WIMPs Would Rescue the Sun

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  9. Encounters with Comet Halley: The New View Begins to Emerge

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  10. Books

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  11. Back Matter

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  12. $text{R}_{x}$ for Ailing Academic Research

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