Stressed out plants emit sounds

Aviv University conducted a study to determine if plants make noise when stressed. The research focused on tomato and tobacco plants, which were divided into three groups: drought-stressed, cut at the stem, and control. These plants were placed in an acoustic box and recorded for an hour. Results showed that stressed plants emitted more ultrasonic sounds than control plants. A greenhouse experiment confirmed these findings, and machine learning classifiers could distinguish the noises produced by different plants.

What new insight or understanding did you gain from this video?