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The homes that could be covered in algae

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Algae produces approximately five times as much biomass per square foot as soil-grown plants like soya beans.

But algae does not need soil to grow. This means that algae has the potential to become a reliable and major source of renewable energy.

With fuel-prices rising, the slimy pond nuisance could have many new uses.

Video script: Arabella Turek, from the Department of Science and Technology Studies, University College London.

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