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.

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

Corn sweats just like we do, and when it does, it causes the humidity around it to spike. It's a phenomenon called "corn sweat." ‘Sit up straight while I talk to you’: Idaho university massacre victims confront killer in court Emmanuel and Brigitte ...