Gallery: Could a Mix of Sand and Pee Be a Super-Green Replacement for Concrete?

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    Image: Peter Trimble
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    dupe-1.1. Conducting Final Experiment (Landscape)

    Peter Trimble's Dupe is a mini manufacturing unit that creates a sandstone-like material.
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    Image: Peter Trimble
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    1.0. Final Product (Portrait)

    All you need is some sand, bacteria, calcium chloride and a decent amount of urea to make it happen.
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    Image: Peter Trimble
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    1.2. Final Product Sitting on Stool (Lnadscape)

    This stool, made from the bio material, can hold all of his approximately 200 pounds.
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    Image: Peter Trimble
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    dupe-1.6. Early Results

    An early version of the sandstone material.
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    Image: Peter Trimble
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    1.3. Lab Work Development

    Trimble experimented to find the right amount of chemicals to use.