Category: ScienceNews

Honey bees know a lot about honey, and humans are starting to catch up. Scientists are now looking at how the chemicals in honey affect bee health. With the help of research scientist Bernarda Calla, Short Wave producer Berly Mccoy explains the chemical complexities of honey, how it helps keep honey bees resilient, and what role it may play in saving the bees. (encore)

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

If you're not so fond of spiders, you may find kindred spirits in other spiders! Researcher Daniela Roessler worked with jumping spiders and found that they know to get away from the presence of other possible predator spiders, even if they've never encountered them before. She talks with host Maria Godoy about her research and what Halloween decorations do to the poor spiders, if arachnids can have arachnophobia. (Encore)

Read Daniela's research and watch videos of the experiment: https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2435.13953

The video is also on her Twitter feed: https://twitter.com/RoesslerDaniela.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

Being small has its advantages ... and some limitations. One organism that intimately knows the pros and cons of being mini is the pumpkin toadlet.

As an adult, the animal reaches merely the size of the skittle. At that scale, the frog's inner ear is so small, it's not fully functional. That means when the frog moves, it's haphazard and seems kind of drunk. And so today, with the help of Atlantic science writer Katie Wu, we investigate: If a frog can't jump well, is it still a frog?

Read Katie's piece in The Atlantic, A Frog So Small, It Could Not Frog: https://bit.ly/3bydh1g

Watch pumpkin toadlets poorly fling themselves around in this video from the Florida Museum: https://bit.ly/3bFAXRv

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

Hey, Short Wavers!

We're off today, but wanted to give you a sneak peek into this week's episodes. To inject a little levity into your (and our) lives, we're celebrating some of the smaller animals in our midst all week long. Tomorrow — an animal probably most aptly described as an orange Skittle. Any guesses?

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

Audio for this episode was updated on 8th July.

A new analysis of deaths in cities across Latin America suggests rising global temperatures could lead to large numbers of deaths in the region and elsewhere in the world. Even a 1-degree rise in extreme heat can add 6% to the risk of dying. Lead researcher Josiah Kephart at Drexel University tells Roland Pease the lessons from Latin America should apply to cities across the global south.

Brazilian ecologist Andreas Meyer talks about the troubling prospects for the health of ecosystems, particularly in tropical regions, if the world does not cut its fossil fuel emissions hard and fast in the next few years.

In the USA, a team of engineers and neurosurgeons are developing a radical new approach for targeted pain relief – in the first instance, for patients recovering from surgery. It’s a flexible implant that wraps around a nerve and cools it to prevent it from transmitting pain signals. What’s more, says bioengineer John Rogers, the implant is made of a material designed to have dissolved safely into the body by the time its pain-killing work is done.

Geologist Bob Hazen has spent more than a decade producing a new classification system for the 5,700 minerals known to exist on the Earth. It improves on the pre-existing scheme by taking into account the myriad ways that many minerals have come into being. He tells Roland that this new way of categorising minerals lays bare a 4.5 billion-year history of remarkable chemical and biological creativity.

And, Hair is an important part of our identities – straight, frizzy, long, not there at all – and our efforts to keep it styled and clean have created an $80 billion hair care industry. Many products offer to improve the life of the stuff on our heads, but isn't it all just dead protein?

CrowdScience listener Toria wants to know what 'healthy' hair really means. To untangle the science behind hair, we zoom in to see how hair grows from the follicles in our scalp and explore how the hair growth process will change over our lifetimes.

Changes in our hair and disorders affecting the scalp can often have emotional impacts on our lives, as presenter Marnie Chesterton learns from a dermatologist who specialises in hair issues.

Having been on a journey with her own hair in recent years following chemotherapy, Marnie is ready for a new 'do and ventures to the hair salon to find out about the health of her own hair.

Meanwhile, another CrowdScience listener, Lucy, wonders why humans lost hair (or fur) on most of our bodies when most other mammals are covered in the stuff. A biological anthropologist who studies not only why hair became concentrated on our heads, but also why there's so much diversity in hair types across humans, unpacks the evolutionary benefits.

Does different hair need different care? And when it comes to shampoo, conditioner, washing, blowdrying and dyeing, what should we be doing to keep our hair structure sound?

As we learn about this strange, non-living feature of our bodies, Marnie finds a new appreciation for the "dead strands of protein sticking out of our skin". And with listener Toria's help and advice, she also finds a new shade for her chemo-curled locks.

(Image: Rio de Janeiro City. Credit: Pintai Suchachaisri/Getty Images)

Hair is an important part of our identities – straight, frizzy, long, not there at all – and our efforts to keep it styled and clean have created an $80 billion hair care industry. Many products offer to improve the life of the stuff on our heads, but isn't it all just dead protein?

CrowdScience listener Toria wants to know what 'healthy' hair really means. To untangle the science behind hair, we zoom in to see how hair grows from the follicles in our scalp and explore how the hair growth process will change over our lifetimes.

Changes in our hair and disorders affecting the scalp can often have emotional impacts on our lives, as presenter Marnie Chesterton learns from a dermatologist who specialises in hair issues.

Having been on a journey with her own hair in recent years following chemotherapy, Marnie is ready for a new 'do and ventures to the hair salon to find out about the health of her own hair.

Meanwhile, another CrowdScience listener, Lucy, wonders why humans lost hair (or fur) on most of our bodies when most other mammals are covered in the stuff. A biological anthropologist who studies not only why hair became concentrated on our heads, but also why there's so much diversity in hair types across humans, unpacks the evolutionary benefits.

With all these different hair types, does different hair need different care? And when it comes to shampoo, conditioner, washing, blowdrying and dyeing, what should we be doing to keep our hair structure sound?

As we learn about this strange nonliving feature of our bodies, Marnie finds a new appreciation for the "dead strands of protein sticking out of our skin". And with listener Toria's help and advice, she also finds a new shade for her chemo-curled locks.

Presented by Marnie Chesterton and produced by Sam Baker for BBC World Service.

Featuring:

● Tina Lasisi, Penn State Department of Anthropology ● Sharon Wong, Consultant Dermatologist ● Ekwy Chukwuji-Nnene, Equi Botanics

“It’s been said there are three kinds of people in the world, those who can count and those who can’t count.” So reads a sentence in the book Innumeracy in the Wild: Misunderstanding and Misusing Numbers, published by Oxford University Press in 2020.

The author of Innumeracy in the Wild is Ellen Peters, Philip H. Knight Chair and director of the Center for Science Communications Research at the University of Oregon. In this Social Science Bites podcast, Peters – who started as an engineer and then became a psychologist – explains to interviewer David Edmonds that despite the light tone of the quote, innumeracy is a serious issue both in scale and in effect.

As to scale, she notes that a survey from the Organisation for Economic Co-operation and Development found 29 percent of the US adult population (and 24 percent in the UK) can only do simple number-based processes, things like counting, sorting, simple arithmetic and simple percentages. “What it means,” she adds, “is that they probably can’t do things like select a health plan; they probably can’t figure out credit card debt,” much less understand the figures swirling around vaccination or climate change.

Peters groups numeracy into three (a real three this time) categories: Objective numeracy, the ability to navigate numbers that can be measured with a math test; subjective numeracy, which is “not your actual ability, but your confidence in your ability to understand numbers and to use numeric kinds of concepts;” and intuitive or evolutionary numeracy, a human being’s natural ability to do things like quickly determine if a quantity is bigger or smaller than another quantity.

That middle type of numeracy, the subjective, is measured by self-reporting. “The original reasons for developing some of these subjective numeracy scales had to do with them just being a proxy for objective numeracy,” says Peters. “But what’s really interesting is that having numeric confidence seems to free people to be able to use their numeric ability.” While freedom is generally reckoned to be good – and objective results back this up – that’s not the case for those confident about their abilities but actually bad with numbers. Similarly, those who have high ability but are underconfident also do poorly compared to high ability and high confidence individuals.

“There are some very deep psychological habits that people who are very good with numbers have that people who are not as good with numbers don’t have,” Peters explains. “It is the case that people who are highly numerate are better at calculations, but they also just simply have a better, more developed set of habits with numbers.”

Less numerate people “are kind of stuck” with the numeric information as presented to them, rather than transforming the information into something that might better guide their decisions. Peters offered the example of a person with a serious disease being told that a life-saving treatment still has a 10 percent chance of killing them. Highly numerate people recognize that that means it has a 90 percent survival rate, but the less numerate might just fixate on the 10 percent chance of dying.

Closing out the podcast, Peters offers some tips for addressing societal innumeracy. This matters because, she notes, research shows that despite high rates of innumeracy, providing numbers helps people make better decisions, with benefits for both their health and their wealth.

... Could a monkey host this podcast?

Aaron Scott and Resident Neuroscience Nerd Jon Hamilton discuss the vocal capabilities of our primate relatives. From syllables and consonants to rhythm and pitch, certain monkeys and apes have more of the tools needed for speech than was once thought. Now scientists are looking to them for insights into the origins of human speech.

What animal should we study next? Email the show at shortwave@npr.org.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

A new analysis of deaths in cities across Latin America suggests rising global temperatures could lead to large numbers of deaths in the region and elsewhere in the world. Even a 1-degree rise in extreme heat can add 6% to the risk of dying. Lead researcher Josiah Kephart at Drexel University tells Roland Pease the lessons from Latin America should apply to cities across the global south.

Brazilian ecologist Andreas Meyer talks about the troubling prospects for the health of ecosystems, particularly in tropical regions, if the world does not cut its fossil fuel emissions hard and fast in the next few years.

In the USA, a team of engineers and neurosurgeons are developing a radical new approach for targeted pain relief – in the first instance, for patients recovering from surgery. It’s a flexible implant that wraps around a nerve and cools it to prevent it from transmitting pain signals. What’s more, says bioengineer John Rogers, the implant is made of a material designed to have dissolved safely into the body by the time its pain-killing work is done.

Geologist Bob Hazen has spent more than a decade producing a new classification system for the 5,700 minerals known to exist on the Earth. It improves on the pre-existing scheme by taking into account the myriad ways that many minerals have come into being. He tells Roland that this new way of categorising minerals lays bare a 4.5 billion-year history of remarkable chemical and biological creativity.

(Image: Rio de Janeiro City. Credit: Pintai Suchachaisri/Getty Images)

Presenter: Roland Pease Producer: Andrew Luck-Baker

The Caribbean is home to gorgeous beaches, mangroves and ... the biggest bacteria known to humankind. Find out exactly how big from science correspondent Nell Greenfieldboyce in this Micro Wave. Then, stay for the listener mail, where we answer YOUR questions — all hosted by our new senior editor, Gabriel Spitzer!

Do you have a question for Short Wave? Email us a voice memo at shortwave@npr.org.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy