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Short Wave - Aluminum’s Journey From Precious Metal To Beer Can

We've been celebrating 150 years of the Periodic Table. This episode, the rise of aluminum! The element is incredibly common, but was once hard to extract. That made it more valuable than gold in the 19th century. NPR's Scott Neuman gives us a short history of aluminum. Or is it aluminium? (We'll also give you the backstory behind the confusion.) Follow Emily Kwong on Twitter @emilykwong1234. Email the show at shortwave@npr.org.

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Short Wave - Getting Closer To The Sun Than Ever Before

An ambitious mission to get a spacecraft close to the sun has revealed a strange region of space filled with rapidly flipping magnetic fields and rogue plasma waves. Science correspondent Nell Greenfieldboyce explains how the Parker Solar Probe may help answer one of the biggest mysteries surrounding the sun. Follow Emily Kwong on Twitter @emilykwong1234. Email the show at shortwave@npr.org.

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Short Wave - If You Give An Orangutan A Kazoo…

If you give an orangutan a kazoo, will it produce a sound? Researchers discovered that this simple instrument could offer insights into the vocal abilities of orangutans — and the evolution of human speech. Short Wave reporter Emily Kwong talks with primatologist Adriano Lameira about a growing body of evidence that humans may not be the only great apes with voice control.

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Short Wave - Is CBD Safe? The FDA Can’t Say

Use of CBD — cannabidiol, the non-psychoactive component in cannabis — has exploded in the last few years. But while it's marketed as a solution for stress, anxiety, insomnia, and pain, the Food and Drug Administration can't say it's safe. NPR health correspondent Allison Aubrey helps parse the science behind a new set of government warnings about CBD. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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Short Wave - The Evolution Of HIV Treatment

A lot has changed since the first cases of AIDS were reported in 1981. Globally, AIDS-related deaths have dropped by more than 55% since 2004, the deadliest year on record. But, the road to effective treatment for HIV, the virus that causes AIDS, was long. Maggie Hoffman-Terry, a physician and researcher who's been on the front lines of the epidemic for decades, explains how treatment has evolved, its early drawbacks, and the issue of access to medications. Follow Maddie on Twitter — she's @maddie_sofia. And email the show at shortwave@npr.org.

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Short Wave - An Interstellar Wanderer Is Coming Our Way

Comet 2I/Borisov will reach its closest approach to the sun on December 8, 2019. We talk to planetary astronomer Michele Bannister about where the heck this comet came from, and what it tells us about our galaxy. Follow Maddie on Twitter — she's @maddie_sofia. And email the show at shortwave@npr.org.

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Short Wave - Does Your Dog REALLY Love You?

Clive Wynne, founding director of the Canine Science Collaboratory at Arizona State University, draws on studies from his lab and others around the world to explain what biology, neuroscience, and genetics reveal about dogs and love. His new book is called Dog Is Love: Why and How Your Dog Loves You. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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Short Wave - The Science Of Smell And Memory

Why can a smell trigger such a powerful memory? Biological anthropologist Kara Hoover explains what's going on in the brain when we smell, how smell interacts with taste, and why our sense of smell is heightened in the winter. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.

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