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Nature 442, 978-980 (31 August 2006) | doi:10.1038/442978a; Published online 30 August 2006

Oceanography: Sick seas

Jacqueline Ruttimann1

  1. Jacqueline Ruttimann is a freelance writer in Maryland.
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The rising level of carbon dioxide in the atmosphere is making the world's oceans more acidic. Jacqueline Ruttimann reports on the potentially catastrophic effect this could have on marine creatures.

It's not hard to imagine a tonne of water: it is a week's worth of not-very-deep baths. Getting to grips with a billion tonnes of water is more of a challenge.

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