A photomicrograph showing a round, pink-orange stained Cyclospora cayetanensis oocyst with several dark purple spots at its centre, surrounded by three other pale green Cyclospora cayetanensis oocysts against a blue-green background

‘Explosive diarrhoea’ outbreak grips US: how researchers are hunting its source

Cases have hit record levels, and scientists are racing to pinpoint where the Cyclospora parasite entered the food supply.

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Photochemical reaction in glass vial.

Chemistry

Chemistry research is undergoing a period of transformation, driven by new technologies and mounting environmental pressures.
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