another incredible study that the same university did right after where they're like okay but can they speak and so they 00:06:42 actually stressed out tobacco plants um they would either like cut them or dehydrate them sort of plant torture um and when they did the more dehydrated that the plants got the more they would emit sound 00:06:55 um these and not quietly it's at the sound of human hearing um just up at 50 or 60 kilohertz