Mapping a community’s air

The word volatile has many meanings.

It can, for example, convey the violently responsive and on-edge –as in, a volatile person, or a volatile situation to avoid. Volatile can describe an object that is elusive, or one that can’t be held down. It can mean a thing that flies, as in the Spanish volador. Or it can mean, in the most scientific and precise terms, a chemical substance that is poised to evaporate at normal temperatures.