Movies: Chemistry

Kate Humble and Helen Czerski reveal the inner workings of the sun and investigate why scientists think changes in the sun's behaviour may have powerful effects on our climate....

That smelly, pale yellow liquid that people flush down the toilet every day is an industrial fertilizer, a diagnostic tool, a medicine, a renewable energy resource; it is an inexhaustible substance that is produced daily in huge quantities. This is t...

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In any photographic process there are essentially two opposing forces at work: one, the developer, aims to turn silver salts to black; the other, the fixer, wants to dissolve those salts. Normally, these are done in sequence so as to remove any poten...