Plants have long been thought of as silent beings, simply existing and growing without making any noise. But a recent study published in the journal Cell has found that plants can actually produce “airborne sounds” when they are stressed or in need of water. These sounds are too high-pitched for most humans to hear, but some animals might be able to pick them up. The … [Read more...] about Can You Hear Plants Cry? The Surprising World of Ultrasonic Plant Sounds