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Scientists discover clicking sounds, which humans can't hear and which differ based on species and type of stress; wonder what uses other plants, animals make of the information
The research shakes up what most botanists thought they knew about the plant kingdom, which had been considered largely silent.
'Our findings suggest that the world around us is full of plant sounds, and that these sounds contain information.'
The click-like sounds, similar to the popping of popcorn, are emitted at a volume similar to human speech.
Scientists find recordings of plants show they make occasional ultrasonic popping noises likely heard by insects and mammals