Gold, Hydrogen and Atomic Bombs

How is Gold formed? Could hydrogen be used in power plants? How small can an atomic bomb be? Could we reverse electrolysis to make water? We tackle these questions in this week's show as well as find out how the shrunken heads in Borneo are shrunk, why burnt toast goes black, and why white bread is white. Plus, we investigate if bullets can be made from custard and whether we can trap light to use as energy! Like this podcast? Please help us by supporting the Naked Scientists

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