Category: ScienceNews

Climate change is contributing to erratic weather where cocoa beans are grown and threatening the global chocolate supply. Record rainfall last year led to fungal infections among cacao trees and dwindled supply of cocoa beans. Heat is also making it more difficult for cocoa beans to thrive. So, for day three of Climate Solutions Week, we look at one innovation in the food industry: chocolate substitutes.

As big chocolate manufacturers rush to stockpile cocoa beans, some companies like Planet A Foods are looking for a more sustainable solution: an alternative that looks like chocolate, tastes like chocolate and feels like chocolate... without chocolate.

You can read more of international correspondent Rob Schmitz's reporting here.

Interested in hearing more climate solutions? Email us at shortwave@npr.org – we'd love to hear your ideas!

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Since the height of the pandemic, there has been a boom in the use of food delivery services. Day 2 of NPR's Climate Solutions Week is all about the environmental impacts of how we shop for our food. So in this episode, NPR correspondent Scott Neuman reports on a question we've all wanted to know the answer to: What is the impact of getting food delivered on our carbon footprint?

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In California's Napa Valley, the nation's unofficial wine capital, one varietal reigns supreme: cabernet sauvignon. But climate change is threatening the small blue-black grapes for which cabernet sauvignon is named. Increasingly severe heat waves are taking a toll on the grape variety, especially in late summer during ripening.

To kick off NPR's Climate Solutions Week, climate correspondent Lauren Sommer joins host Regina G. Barber for a deep dive into the innovations wineries are actualizing — and the ways that cabernet farmers and fans alike could learn to adapt.

Climate change is affecting our food, and our food is affecting the climate. NPR is dedicating a week to stories and conversations about the search for solutions.

Read more of Lauren's reporting on how climate change is affecting wine.

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Hey, Short Wavers! Today, we have a special present for all of you: An episode from our good friends at NPR's Body Electric podcast all a bout artificial intimacy! Thanks to advances in AI, chatbots can act as personalized therapists, companions and romantic partners. The apps offering these services have been downloaded millions of times. If these relationships relieve stress and make us feel better, does it matter that they're not "real"? On this episode of Body Electric, host Manoush Zomorodi talks to MIT sociologist and psychologist Sherry Turkle about her new research into what she calls "artificial intimacy" and its impact on our mental and physical health.

Binge the whole Body Electric series here. Plus, sign up for the Body Electric Challenge and our newsletter here.

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Many of us experience an inner voice: we silently talk to ourselves as we go about our daily lives. CrowdScience listener Fredrick has been wondering about the science behind this interior dialogue. We hear from psychologists researching our inner voice and discover that it’s something that begins in early childhood. Presenter Caroline Steel meets Russell Hurlburt, a pioneering scientist who devised a method of researching this - and volunteers to monitor her own inner speech to figure out what’s going on in her mind. She discovers that speech is just part of what’s going on in our heads, much of our inner world in fact doesn’t involve language at all but includes images, sensations and feelings. Caroline talks to psychologist Charles Fernyhough, who explains one theory for how we develop an interior dialogue as young children: first speaking out loud to ourselves and then learning to keep that conversation going silently. No one really knows how this evolved, but keeping our thoughts quiet may have been a way of staying safe from predators and enemies. Using MRI scanning, Charles and Russell have peered inside people’s brains to understand this interior voice and found something surprising: inner dialogue appears to have more in common with listening than with speaking.

Caroline also has an encounter with a robot that has been programmed to dialogue with itself. Which leads us to some deep questions: is our inner voice part of what makes us human, and if so, what are the consequences of robots developing this ability? Scientist Arianna Pipitone describes it as a step towards artificial consciousness.

Featuring: Professor Charles Fernyhough, University of Durham, UK Professor Russell Hurlburt, University of Nevada, Las Vegas, USA Dr Arianna Pipitone, University of Palermo, Italy Presenter: Caroline Steel Producer: Jo Glanville Editor: Cathy Edwards Sound design: Julian Wharton Studio manager: Donald MacDonald Production co-ordinator: Ishmael Soriano

(Image: Mixed Race boy looking up Credit: Jose Luis Pelaez Inc via Getty Images)

Here on Unexpected Elements, we've been glued to the drama of the Paralympic games in Paris. But it's not just the thrill of the competition that's got us hooked, we've also become obsessed with some of the high-octane training regimes undertaken by the athletes.

Take American 'Armless Archer' Matt Stutzman, who shoots arrows through the windows of his own house and car to recreate the high pressure of the Olympic stadium. He's chasing a thrill, and so are we!

We hear about the research on one extraordinary woman who had a medical condition which caused her to have no fear.

And we follow the fate of an extraordinary marine creature, who detaches his own arm in his quest for a mate.

We hear about why humans love to be scared - as long as it's all in good fun.

And we hear about the space debris falling to earth, and the thrilling quest of a plane full of scientists who want to watch it fall.

That and loads more unexpected elements in this week's show.

Presenter: Marnie Chesterton, with Tristan Ahtone and Affelia Wibisono Producer: Emily Knight, with Harrison Lewis, Dan Welsh and Noa Dowling Sound engineer: Gwynfor Jones

Last year, a dog named Bunny went viral on TikTok for pressing buttons with words on them to "communicate" with her owner. But can dogs even understand those words on a soundboard in the first place? A new study in the journal PLOS One seeks answers. Host Regina G. Barber and producer Rachel Carlson break down that story and more of the week's news with the help of All Things Considered's Ari Shapiro.

Have other viral headlines that you want us to put to the test for its scientific truth? Email us at shortwave@npr.org — we might cover it on a future episode!

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A Chinese survey of diseased animals farmed for their fur – such as mink, foxes and raccoon dogs - has revealed high levels of concerning viruses, including coronaviruses and flu viruses, many of which appear to jump easily from species to species. John Pettersson of Uppsala University discusses the threat to us humans.

We learnt early on in the Covid-19 pandemic how important the genetic details of the virus were in tracking the spread and spotting new variants. The vaccines were designed from gene sequences shared electronically long before any biological samples became available. Virologist Emma Hodcroft has teamed up with researchers around the world to develop a new virus database, Pathoplexus, to speed up the sharing of gene sequences.

Mpox outbreaks are causing concerns in Central and West Africa - particularly in the Democratic Republic of the Congo. A smallpox vaccine has started arriving, giving some protection against mpox. But there’s good news this week in an experimental vaccine developed especially for mpox by Moderna – one of the companies that brought us the mRNA vaccines against Covid-19. Galit Alter, vice president of immunology research at Moderna, tells us animal tests show that it appears to be highly effective.

And we discuss embryonic eavesdropping with Francisco Ruiz-Raya of Glasgow University. In the yellow-legged-gull, baby bird embryos that have chattier parents tend to come out chattier themselves – and likely receive better care because of their enhanced communication.

Presenter: Roland Pease Producer: Jonathan Blackwell Production co-ordinator: Andrew Rhys Lewis

(Image: A mink in a mink farm in the hands of a man. Credit: Neznam/Getty Images)

Short Wave producer Hannah Chinn has adult-onset eczema. They're not the only one. Up to ten percent of people in the United States have it, according to the National Eczema Association — and its prevalence is increasing. Despite its ubiquity, a lot about this skin condition remains a mystery.
So today, Hannah's getting answers. They sat down with Raj Fadadu, a dermatologist at UC San Diego, to ask: What is eczema? What triggers it in the first place? And might climate change make it worse sometimes?

If you liked this episode, check out our episode on the science of itchiness. Also, follow us! That way you never miss another Short Wave episode.

Interested in hearing more about climate change and human health? Email us at shortwave@npr.org — we'd love to hear your feedback!

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Listening to the ongoing debate about artificial intelligence, one could be forgiven for assuming that the technology is either a bogeyman or a savior, with little ground in between. But that’s not the stance of economist Daron Acemoglu, professor at the Massachusetts Institute of Technology and the author, with Simon Johnson, of the new book Power and Progress: Our Thousand-Year Struggle Over Technology and Prosperity. Combining a cogent historical analysis of past technological revolutions, he examines whether a groundbreaking new technology “augments” the status quo, as opposed to merely squeezing out human labor.

“[M]y favorite term is ‘creating new tasks’ because I think it really clarifies what the quote unquote augmenting needs to take the form of,” he tells interviewer David Edmonds in this Social Science Bites podcast. “It's not just making a worker more productive in tightening the screws, but it's really creating new jobs that didn't exist.” And so, he explains to those perhaps afraid that a bot is gunning for their livelihood, “Automation is not our enemy. Excessive automation is our enemy.”

This is not to depict Acemoglu as an apologist for our new silicon taskmasters. Current trends such as the consolidation of power among technology companies, a focus on shareholder returns at the expense of all else, a blind trust in companies to somehow muddle through to societal equilibrium, and a slavish drive to automate everything immediately all leave him cold: “I feel AI is going in the wrong direction and taking us down with it.”

His conversation doesn’t end there, thankfully, and he offers some hopeful words on how we might find that modus vivendi with AI, including (but by no means only relying on) “the soft hand of the state in tipping the scales one way or another.”

Acemoglu is an elected fellow of the National Academy of Sciences, the American Philosophical Society, the British Academy of Sciences, the Turkish Academy of Sciences, the American Academy of Arts and Sciences, the Econometric Society, the European Economic Association, and the Society of Labor Economists. He is also a member of the academic-cum-policymaker group of economic movers and shakers known as the Group of 30.

Besides Power and Progress, his books include the popular bestseller Why Nations Fail: Power, Prosperity, and Poverty written with James Robinson. Acemoglu has received a number of prizes, including two inaugural awards in 2004, the T. W. Shultz Prize from the University of Chicago and the Sherwin Rosen Award for outstanding contribution to labor economics. He received the John Bates Clark Medal in 2005, the Erwin Plein Nemmers Prize in 2012, and the 2016 BBVA Frontiers of Knowledge Award, as well as the Distinguished Science Award from the Turkish Sciences Association in 2006 and a Carnegie Fellowship in 2017.