A toilet at Nanyang Technological University
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The toilet system turning human waste into energy

25 October 2013 Last updated at 16:55 BST

Researchers at Singapore's Nanyang Technological University (NTU) have been working on ways to make towns and cities more sustainable by taking waste from housing and turning it into energy.

The team created a new type of toilet system which turns human waste into biogas - which can be used for cooking and generating electricity - and biodiesel.

Spencer Kelly finds out more.

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