Monitoring a nearby star’s midlife crisis, and the energetic cost of chewing

Monitoring a nearby star’s midlife crisis, and the energetic cost of chewing

On this week’s show: An analog to the Maunder Minimum, when the Sun’s spots largely disappeared 400 years ago, and measuring the energy it takes to chew gum We have known about our Sun’s spots for centuries, and tracking this activity over time revealed an 11-year solar cycle with predictable highs and lows. But sometimes these cycles just seem to stop, such as in the Maunder Minimum—a 70-year period from 1645 to 1715 with little or no sunspot activity. News Intern Zack Savitsky joins host Sarah Crespi to discuss a nearby star that appears to have entered a similar quiet period, and what we can learn from it about why stars take naps. Also this week on the show, Adam van Casteren, a postdoctoral researcher in the School of Biological Sciences at the University of Manchester, joins Sarah to talk about measuring how much energy we use to chew up food. Based on the findings, it appears humans have turned out to be superefficient chewers—at least when it comes to the gum used in the study—with less than 1% of daily energy expenditure being spent on mastication. This week’s episode was produced with help from Podigy. [Image: NASA/SDO; Music: Jeffrey Cook] [alt: photo of the largest sunspot from our latest solar cycle with podcast overlay symbol] Authors: Sarah Crespi; Zack Savitsky Episode page: https://www.science.org/doi/10.1126/science.ade4241 About the Science Podcast: https://www.science.org/content/page/about-science-podcast Learn more about your ad choices. Visit megaphone.fm/adchoices

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A team effort to save a giant fish, the power of moonlight, and how scientists can navigate a tough political environment

A team effort to save a giant fish, the power of moonlight, and how scientists can navigate a tough political environment

First up on the podcast, along Brazil’s Juruá River, local residents have been working with scientists to manage a giant fish called the arapaima—affecting the land, the people, and the economy. Contr...

7 Touko 53min

Watching a spiders’ heart beat, epigenetic ethics, and what science biographies reveal about fame

Watching a spiders’ heart beat, epigenetic ethics, and what science biographies reveal about fame

First up on the podcast, Online News Editor David Grimm shares a batch of fun stories with podcast host Sarah Crespi—from spider hearts racing when traffic gets loud to a disease-preventing house. Sta...

30 Huhti 46min

Cleaning up uranium mining, and how the heart avoids cancer

Cleaning up uranium mining, and how the heart avoids cancer

First up on the podcast, freelance science and environmental journalist Quentin Septer joins host Sarah Crespi to talk about a controversial uranium mine getting fast-tracked in South Dakota. Septer c...

23 Huhti 30min

The normals | Episode 3

The normals | Episode 3

The final of a three-part limited Science Podcast series that looks at the history of normal human subjects in research In episode two, we heard what happened to the normals program after church volu...

21 Huhti 33min

How to keep quantum computers cool, whether prediction markets harm public health, and podcasting on podcasting

How to keep quantum computers cool, whether prediction markets harm public health, and podcasting on podcasting

First up on the podcast, quantum computers require extremely low temperatures—less than 1°C away from absolute zero. But getting down to those temperatures has usually required dilution fridges using ...

16 Huhti 50min

The Normals | Episode 2

The Normals | Episode 2

Last time on The Normals, we learned that in the 1950s, the National Institutes of Health (NIH) wanted to recruit many healthy volunteers for basic research. Two peace churches, the Mennonites and the...

14 Huhti 27min

A chimpanzee ‘civil war,’ and NASA plans for nuclear propulsion

A chimpanzee ‘civil war,’ and NASA plans for nuclear propulsion

First up on the podcast, freelance science journalist Hannah Richter joins host Sarah Crespi to discuss NASA’s plans to send a nuclear-powered spacecraft to Mars in less than 3 years. Having not launc...

9 Huhti 42min

The Normals | Episode 1

The Normals | Episode 1

How do we know what's normal in a person? In the early 1950s, the National Institutes of Health (NIH) set out to do something unprecedented. It wanted to start studying normal humans on a grand scale....

7 Huhti 23min

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