There’s a reason why farmers wear protective gear when applying organophosphate pesticides. The substances are very effective at getting rid of unwanted bugs, but they can also make people sick. Related compounds—organophosphate nerve agents—can be used as deadly weapons. Now researchers have developed a fast way to detect the presence of such compounds in the field using a disposable “lab-on-a-glove.” The report on the glove appears in the journal ACS Sensors.