I came across this in a magazine and I'm skeptical about it. Does anyone have any evidence to support this or a link to the "studies' it references? Per attachment: "We know that plants utilize biochemical signaling molecules to communicate, especially when a predator is nearby. But biologists have now discovered plants also communicate acoustically. Researchers observed uniform repetitive clicking sounds of about 220 MHz amount cereal plants. Clearly these plants can 'hear' these sounds because the noise influences the growth of their roots. But what these plants 'talk' about is still a mystery."