# The Truth About 'Corn Sweat' Scientific facts about corn transpiration and its agricultural impact. - **Source:** [Scientific American Content: Global](https://brifing.si/source/4f066134-e06d-4415-87ef-305e3dc2aba6) - **Published:** 2026-07-14 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/46f980b8-087a-4224-9b57-d1d771e572de ## What is Corn Sweat? Corn sweat refers to the release of water vapor through transpiration by corn plants. This natural process is essential for photosynthesis. However, the large leaf area and dense planting of corn can lead to increased humidity. ## The Role of Agriculture In the U.S., corn is grown on approximately 95 million acres. This vast area and intensive irrigation result in more water vapor being released into the atmosphere. The scale of agriculture and yield optimization amplify the effects of corn sweat. ## The Transpiration Process Plants take in carbon dioxide and release water vapor and oxygen during photosynthesis. This process is directly related to the plant's leaf area and stomatal density. Corn has a larger leaf area compared to other crops. ## Environmental Impacts Conditions such as high temperatures and low humidity cause plants to release more water vapor. This can trap moisture during heat waves, leading to further increases in temperature and humidity. ## Farmers' Strategies Farmers intensively irrigate corn to maximize yield. This increases transpiration and raises humidity levels. However, reducing irrigation can lead to drought and yield loss. ## Conclusion and Recommendations Corn sweat is directly linked to the scale of agriculture and yield optimization. To reduce its impact, corn planting areas could be decreased or irrigation limited. However, these measures may result in yield losses. ## Sources covering this story - https://www.scientificamerican.com/article/heres-the-deal-with-corn-sweat-its-not-all-actually-corns-fault/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._