Why can’t animals talk to us? Are humans the only animals that can talk? Can different species of animals communicate with each other? We learn about animal communication with Arik Kershenbaum, author of Why Animals Talk: The New Science of Animal Communication. He studies wolves, gibbons, dolphins and hyrax to learn how they communicate. Also in this episode: why are parrots able to speak human words but other birds can’t?

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Why do we have to poop? Why does fiber make you poop? Why is poop brown? Why does it smell so bad? Why do farts smell bad, too? Yup, we’re going there! In this episode, Mary Roach, author of Gulp: Adventures on the Alimentary Canal, answers your questions about those things that we’re told not to talk about in polite company: poop and farts. We learn how astronauts use the bathroom in space and how many germs are in one ounce of poop.

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Why do we worry and how can we deal with it? Why do we get anxious? Where does anxiety come from? Anxiety or worry is a hard feeling to overcome, but it’s a universal human emotion. In this episode, we explore anxiety with clinical psychologist Eileen Kennedy-Moore, also known as Dr. Friendtastic. She helps us understand why moderate anxiety is useful and necessary. But too much worry can prevent you from learning new things or doing activities that could be fun. And she has some tips for how to overcome anxious feelings.

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