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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Grappling with declining populations, and the future of quantum mechanics

Grappling with declining populations, and the future of quantum mechanics

First up on the podcast, Science celebrates 100 years of quantum mechanics with a special issue covering the past, present, and future of the field. News Contributing Correspondent Zack Savitsky joins...

4 Joulu 202538min

When we’ll hit peak carbon emissions, and macaques that keep the beat

When we’ll hit peak carbon emissions, and macaques that keep the beat

First up on the podcast, when will the world hit peak carbon emissions? It’s not an easy question to answer because emissions cannot be directly measured in real time. Instead, there are proxies, sate...

27 Marras 202526min

A headless mystery, and a deep dive on dog research

A headless mystery, and a deep dive on dog research

First up on the podcast: the mysterious fate of Europe’s Neolithic farmers. They arrived from Anatolia around 5500 B.C.E. and began farming fertile land across Europe. Five hundred years later, their ...

20 Marras 202532min

Solving the ‘golfer’s curse’ and using space as a heat sink

Solving the ‘golfer’s curse’ and using space as a heat sink

First up on the podcast, Online News Editor David Grimm joins host Sarah Crespi for a rundown of online news stories. They talk about lichen that dine on dino bones, the physics of the lip-out problem...

13 Marras 202528min

Understanding early Amazon communities and saving the endangered pocket mouse

Understanding early Amazon communities and saving the endangered pocket mouse

First up on the podcast, Contributing Correspondent Sofia Moutinho visited the Xingu Indigenous territory in Brazil to learn about a long-standing collaboration between scientists and the Kuikuro to b...

6 Marras 202535min

Detecting the acidity of the ocean with sound, the role of lead in human evolution, and how the universe ends

Detecting the acidity of the ocean with sound, the role of lead in human evolution, and how the universe ends

First up on the podcast, increased carbon dioxide emissions sink more acidity into the ocean, but checking pH all over the world, up and down the water column, is incredibly challenging. Staff Writer ...

30 Loka 202545min

The contagious buzz of bumble bee positivity, and when snow crabs vanish

The contagious buzz of bumble bee positivity, and when snow crabs vanish

First up on the podcast, the Bering Sea’s snow crabs are bouncing back after a 50-billion-crab die-off in 2020, but scientists are racing to predict what’s going to happen to this important fishery. C...

23 Loka 202527min

Hunting ancient viruses in the Arctic, and how ants build their nests to fight disease

Hunting ancient viruses in the Arctic, and how ants build their nests to fight disease

First up on the podcast, Contributing Correspondent Kai Kupferschmidt takes a trip to Svalbard, an Arctic archipelago where ancient RNA viruses may lie buried in the permafrost. He talks with host Sar...

16 Loka 202526min

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