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"The Egyptians were fertilising the land, and then fertilising the sea with the run-off, " she said.
BBC: Egyptian farmers (Getty Images)
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It appears that faced with this threat, the creature has found a way of fertilising itself.
BBC: News | UK | West Wales recovering from 'environmental disaster'
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But the Obama campaign itself concedes that fertilising the grassroots is expensive.
ECONOMIST: The Obama campaign: Growing the grassroots | The
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It is also a hermaphrodite, fertilising itself to produce clones.
ECONOMIST: Connectomics aims to map the atlas of the brain
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It would be a mistake to think of geo-engineering as a substitute for curbing carbon-dioxide emissions not merely because of the acidification of the oceans, but also because if you ever stop fertilising the oceans or spraying the atmosphere or whatever, the problem will rapidly return.
ECONOMIST: Global warming
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Even the most potentially disturbing suggestion, which involves fertilising the oceans with iron in order to promote the growth of planktonic algae (in the hope that they would sink to the seabed, taking their carbon with them), can be covered by the London Convention on marine pollution, which regulates dumping at sea, and has already addressed itself to research in the area.
ECONOMIST: Geoengineering