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The idea of a river of diamonds might sound like it only exists in imagination - but a team of scientists believes it could be a real thing on other planets in our solar system. After recreating particular conditions on Earth using PET plastic - the type found in bottles - the researchers found they could generate microscopic nano-diamonds. Professor Dr Dominik Kraus from the University of Rostock in Germany was involved in the study and he's been speaking to Newshour's Ben James. (Photo shows a graphic of the experiment involving PET plastic forming diamonds. Credit: Helmholtz-Zentrum Dresden-Rossendorf)