Short Wave Folgen

This year, there will be a "blue moon" for Halloween. So for today's show, we're asking: What IS a blue moon? Is the moon ever blue? And are they as rare as the phrase "once in a blue moon" implies?For additional info and fun links, check out the episode page.Follow Maddie and Rebecca on Twitter for more science nuggets. Maddie's @maddie_sofia and Rebecca's @rebeccalramirez. Email the show your celestial musings and inquiries. We're at shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

We know that people with Alzheimer's often have sleep problems. But does it work the other way? Do problems with sleep set the stage for this degenerative brain disease? NPR correspondent Jon Hamilton introduces us to some scientists looking into that connection in this updated report on the key role deep sleep may play in maintaining brain health and protecting the brain against Alzheimer's. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

Happy Hallo-Week! Today we have the story of Twinkies that were left alone for eight years. One grew a moldy spot and another shriveled up in its packaging, almost like a mummy. NPR's Nell Greenfieldboyce explains how two scientists unraveled the mystery of the mummified and moldy snack cakes.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy