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b'SMS isn\\u2019t the original instant messaging system.\\xa0Plants can send chemical warnings through their leaves in a fraction of a second.\\xa0And while we love being in the messaging loop \\u2013 frenetically refreshing our browsers \\u2013 we miss out on important conversations that no Twitter feed or inbox can capture. That\\u2019s because eavesdropping on the communications of non-human species requires the ability to decode their non-written signals.\\nDive into Arctic waters where scientists make first-ever recordings of the socializing clicks and squeals of narwhals, and find out how climate shifts may pollute their acoustic landscape.\\xa0Also, why the chemical defense system of plants has prompted one biologist to give greenery an \\u201c11 on the scale of awesomeness.\\u201d And, you can\\u2019t see them, but they sure can sense one another: how communicating microbes plan their attack.\\nGuests:\\n\\n\\nSusanna Blackwell\\xa0\\u2013\\xa0Bio-acoustician with Greeneridge Sciences. Hear her recordings of narwhals\\xa0here.\\n\\n\\nSimon Gilroy\\xa0\\u2013\\xa0Professor of botany, University of Wisconsin, Madison. His video of glowing green caterpillar-munched plants can be viewed\\xa0here.\\n\\n\\nPeter Greenberg\\xa0\\u2013\\xa0Professor of microbiology, University of Washington, Seattle\\n\\n\\nOriginally aired October 29, 2018\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'