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SALT LAKE CITY, UTAH (kuer) - Journalist Christopher McDougall points out that there is only one other animal on the planet that wears shoes, and that's just because we "grab them by the legs and hammer them on." McDougall is the author of "Born to Run" and his book is at the center of the barefoot running trend. Wednesday, he joins us to explain why so many people are ditching their sneakers and reconnecting with the way he says our bodies were built to run. (Rebroadcast)

<i>Image by <a href="http://www.flickr.com/photos/adisetiawan/2332993278/">Adi Setiawan</a>/<a href="http://creativecommons.org/licenses/by-nc-nd/2.0/deed.en" target="_blank">Creative Commons</a> via flickr</i>

Even as society contemplates the dangers of video games, neuroscientists and psychologists are using virtual reality therapy to treat a whole host of conditions. From post-traumatic stress disorder to burn treatment to stroke, researchers and practitioners are finding that virtual reality can ease pain, both physical and psychological. On Friday, Jennifer Napier-Pearce explores how therapeutic simulations are empowering both doctors and patients.

<i>Image by <a href="http://www.flickr.com/photos/rosieobeirne/4090198486/">Rosie O'Beirne</a>/<a href="http://creativecommons.org/licenses/by-nc-nd/2.0/deed.en" target="_blank">Creative Commons</a> via flickr</i>

It's an unpaid, taxing and often thankless job. And it's being performed in nearly one-third of American households: Someone is giving round-the-clock care for an elderly parent or a chronically ill spouse. Author Gail Sheehy has been there and on Friday, she joins Jennifer Napier-Pearce to talk about the challenges, fears and rewards of caregiving.

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