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  1. Health & Medicine

    Body & Brain

    Food tastes less fatty to overweight people, plus an itch protein and thirsty rats in this week’s news.

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  2. Genes & Cells

    The genes for caffeine cravings, plus rare variants and shaping eyes in this week’s news.

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  3. Hanging in the balance

    What is the fate of the universe?

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  4. Out of the fabric

    Are space and time fundamental?

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  5. Strung together

    Is there a theory of everything?

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  6. In the dark

    What is the universe made of?

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  7. Pre-Bang branes and bubbles

    What happened before the big bang?

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  8. Cosmic questions, answers pending

    Special section

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  9. Book Review: The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos by Brian Greene

    Review by Tom Siegfried.