The process is known as evapotranspiration, which is how plants, including corn, release water vapor into the atmosphere.

Corn sweat is exactly what it sounds like: moisture given off by corn. With large swaths of corn fields in the Midwest and even into Michigan, the amount of moisture in the air increases on hotter days.

Corn sweat. Yes, the term for how the crop can drive up the humidity through a process called evapotranspiration is a thing. How much of a thing is corn sweat, though?