See how corn sweat affects humidity and summer heat in states like Ohio. Explore the science behind how cornfields contribute to atmospheric moisture.

A phenomenon called "corn sweat" could exacerbate the impacts of the extreme heat blanketing a large portion of the U.S., according to experts.

The millions of acres of corn grown in states like Ohio, Illinois and Iowa perspire just like any other plant. A single acre sweats 3,000 to 4,000 gallons of water every day.