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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Engineering safer football helmets, and the science behind drug overdoses

Engineering safer football helmets, and the science behind drug overdoses

First up on the podcast, host Sarah Crespi and Staff Writer Adrian Cho talk football and the latest science behind helmets engineered to reduce head injuries. Have better materials and testing led to ...

5 Helmi 39min

Shielding astronauts from cosmic rays, and planning the end of fossil fuels

Shielding astronauts from cosmic rays, and planning the end of fossil fuels

First up on the podcast, how do we protect astronauts when they leave the shelter of Earth’s protective magnetic fields and face the slow, constant bombardment of space radiation? Freelance science jo...

29 Tammi 38min

Tracking falling space debris via sonic booms, and getting drunk off your own microbes

Tracking falling space debris via sonic booms, and getting drunk off your own microbes

First up with Jennie Erin Smith, Science’s new senior biomedicine reporter, we delve into: autobrewery syndrome, when microbes inside the human gut make too much alcohol; how doctors can use a public ...

22 Tammi 32min

Reversing ecological destruction in the Galápagos, and finally mapping Antarctica’s surface

Reversing ecological destruction in the Galápagos, and finally mapping Antarctica’s surface

First up on the podcast, freelance science journalist Sofia Quaglia talks about her visit to the Galápagos archipelago and how researchers there are working to restore the islands to their former ecol...

15 Tammi 30min

The real da Vinci code, and the world’s oldest poison arrows

The real da Vinci code, and the world’s oldest poison arrows

First up on the podcast, scholars are on a quest to find Leonardo da Vinci’s DNA. With no direct descendants, the hunt involves sampling the famous polymath’s papers, paintings, and distant cousins. C...

8 Tammi 27min

Looking for continents on exoplanets, and math is hard for mathematicians, too

Looking for continents on exoplanets, and math is hard for mathematicians, too

First up on the podcast, the best images of exoplanets right now are basically bright dots. We can’t see possible continents, potential oceans, or even varying colors. To improve our view, scientists ...

1 Tammi 43min

This year’s biggest breakthrough and top news stories

This year’s biggest breakthrough and top news stories

First up on the podcast, Online News Editor David Grimm joins host Sarah Crespi to talk about this year’s best online news stories—top performers and staff picks alike. Together they journey the scien...

18 Joulu 202533min

Hunting asteroids from space, and talking to pollinators with heat

Hunting asteroids from space, and talking to pollinators with heat

First up on the podcast, we’ve likely only found about half the so-called city-killer asteroids (objects more than 140 meters in diameter). Freelance science journalist Robin George Andrews joins host...

11 Joulu 202527min

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