comscore Composting-toilet proposal is vying for $50,000 prize | Honolulu Star-Advertiser
Business | TheBuzz

Composting-toilet proposal is vying for $50,000 prize

  • COURTESY EMILY MACNINTCH AND NICK HOLVIK / NATIONAL GEOGRAPHIC
    A screen shot from a video shows the process of bio-toilets turning human excrement into a source of energy and fertilizer for agriculture, in addition to providing sanitation to poor areas.

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