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Published online 20 August 2008 | Nature | doi:10.1038/454924a
Whatever floats your boat
Shipping is one of the most fuel-efficient ways to move freight, but the industry still produces significant greenhouse-gas emissions, including more than a quarter of the world's nitrogen oxides emissions. And it also produces more sulphur dioxide emissions than all land transportation combined. In the latest of our Future Transport series, Duncan Graham-Rowe looks at the new wave in shipping.
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