Short Wave

NPR science correspondent Jon Hamilton, an expert on sleep's impact on health, joins the discussion on the surprising connection between sleep and Alzheimer's disease. He reveals new research showing how poor sleep may accelerate brain changes linked to Alzheimer's. The podcast delves into the glymphatic system's role in brain health, highlighting how deep sleep helps clear toxins like beta amyloid. Hamilton emphasizes the importance of sleep quality for cognitive health, presenting a compelling case for better sleep hygiene as a shield against cognitive decline.

Nell Greenfieldboyce, an NPR science correspondent, delves into the bizarre tale of an eight-year-old Twinkie that transformed into a spooky mummified snack. She discusses the surprising science behind its moldy companion and how researchers unraveled the mysteries of fungal growth and preservation. This exploration juxtaposes childhood nostalgia with reflections on decay, prompting listeners to ponder the timelessness of snacks and the fleeting nature of memories.

Kaeli Swift, a lecturer at the University of Washington, dives into the fascinating world of crows. She explains their remarkable cognitive abilities and how they can recognize human faces, showcasing their intelligence. The discussion uncovers their social behaviors, including unique funerals that reveal their understanding of death. Kaeli shares stories about how crows communicate threats and learn to associate locations with danger, all while highlighting their tool-making skills. Get ready to rethink these misunderstood birds!

Explore the magical transformation of leaves in autumn as a botanist explains the science behind their vibrant color change. Discover how shorter days and colder temperatures trigger this stunning seasonal shift. Learn about the roles of pigments like chlorophyll and carotenoids, and why deciduous trees prepare for winter dormancy differently than conifers. Plus, hear touching messages from listeners celebrating a year of engaging scientific exploration!

Maria Godoy, a Senior Science Correspondent for NPR and a pandemic science expert, breaks down the critical role aerosols play in coronavirus transmission. She discusses recent CDC updates that acknowledge the airborne spread of COVID-19, reshaping public safety practices. The conversation highlights the importance of ventilation and air filtration in reducing risk, particularly during winter gatherings. Godoy also provides practical tips for maintaining safe social interactions, enhancing your understanding of personal safety measures amid evolving science.

Randall Munroe, the brilliant mind behind the xkcd comic, combines humor with science in his latest discussion. He introduces us to bizarre yet insightful experiments, including how nuclear tests have influenced beverage safety. Munroe also reminisces about peculiar practices like 'chicken pox parties' and explains the fascinating science of tracing birth years through radioactive teeth. His unique perspective encourages us to embrace curiosity, showing that the world is often stranger than fiction.

Delve into the incredible realm of quantum mechanics, where uncertainties and entanglement redefine our understanding of reality. Hear how a tossing coin analogy vividly explains the quirky behaviors of particles. Discover the revolutionary advancements in atomic clocks that leverage entanglement for unprecedented precision, impacting everything from GPS to modern technology. This journey, led by a MacArthur Fellow, showcases the inventive spirit of scientific exploration, blending creativity with rigorous research.

Elissa Nadworny, an NPR Education Reporter, shares her insights from a cross-country road trip observing how colleges manage coronavirus testing. She highlights the University of Illinois' approach, showcasing its mass testing strategy to combat the virus. However, she reveals the challenges faced, particularly student behavior and non-compliance during social gatherings. Elissa discusses the effectiveness of testing protocols and the crucial need for behavioral change to curb the spread of COVID-19 within campus communities.

Explore the fascinating world of tiny mites that call your skin home, especially on your face! These eight-legged critters emerge at night for a little romance, and their diets remain a mystery. The hosts share surprising facts about their prevalence among adults and discuss the potential health benefits they might offer. With a blend of humor and curiosity, they reflect on our relationship with these microscopic neighbors and celebrate the joy of science and community after a year of sharing knowledge.

Chelsea Harvey, a reporter for E&E News, shares her firsthand experiences during the MOSAiC expedition, the largest polar research mission in history. She dives into the troubling reports of gender discrimination and harassment faced by women in a predominantly male environment. The discussion highlights the impact of an imposed dress code on safety and morale. Harvey emphasizes the crucial role of leadership in combating sexual harassment and reflects on the ongoing struggle for equity in polar research, shedding light on the voices of female scientists.