Dr Petri Turhanen was working on a synthesis of a modified version of the biological molecule adenosine triphosphate (ATP), when he discovered that the cation exchange resin he was using was unintentionally producing another molecule.

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Jing Wang and his team at Empa and ETH Zurich usually work on measuring, analyzing and reducing airborne pollutants such as aerosols and artificially produced nanoparticles. 

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