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This is a free audio podcast from the American Physiological Society. Discussion questions, related research, and other teaching resources are available by clicking on the "collection" tab in the left hand column. You've heard the word telecomm? In this episode, we are going to coin a new word: elecomm, shorthand for elephant communication. Caitlin OÂConnell-Rodwell is a Stanford University professor and the author of The Elephant's Secret Sense, published by the University of Chicago Press. Dr. OÂConnell-Rodwell discovered that elephant vocalizations travel through the ground, sometimes for great distances. Other elephants pick up these seismic communications and understand them. There are links to videos of three of Dr. OÂConnell-RodwellÂs elephant communication experiments on her website, www.utopiascientific.org or by clicking here, here and here. (Begins at 2:44) From the Buzz in Physiology (Begins at 1:13): Divers who held their breath for several minutes had elevated levels of S100B (a protein found after cell injury) in their bloodstream, which suggests that holding one's breath for a long time disrupts the blood-brain barrier. However, the appearance of the protein was transient and leaves open the question of whether lengthy breath holding can damage the brain over the long term, according to the Lund University researchers. And drinking beetroot juice boosts stamina and could help you exercise for up to 16% longer, according to a study from the University of Exeter. The study shows how the nitrate contained in the juice leads to a reduction in oxygen uptake, making exercise less tiring.
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