How much you want to bet the spy agencies are working on (already have working?) ways to eavesdrop on people by listening to the plants in the room, and not by putting bugs in the plants.
New research, published in the journal Trends in Plant Science, has revealed that plants not only respond to sound, but they also communicate to each other by making “clicking” sounds. Using powerful loudspeakers, researchers at The University of Western Australia were able to hear clicking sounds coming from the roots of corn saplings.
Researchers at Bristol University also found that when they suspended the young roots in water and played a continuous noise at 220Hz, a similar frequency to the plant clicks, they found that the plants grew towards the source of the sound.
Found by Brother Uncle Don