Could being happier help us fight infectious disease?
As the world embarks on a mass vaccination programme to protect populations from Covid-19, Crowdscience asks whether our mood has any impact on our immune systems. In other words, could being happier help us fight infectious diseases? Marnie Chesterton explores how our mental wellbeing can impact our physical health and hears that stress and anxiety make it harder for our natural defence systems to kick in – a field known as psychoneuroimmunology. Professor Kavita Vedhara from the University of Nottingham explains flu jabs are less successful in patients with chronic stress.
So scientists are coming up with non-pharmacological ways to improve vaccine efficiency. We investigate the idea that watching a short feel-good video before receiving the inoculation could lead to increased production of antibodies to a virus. And talk to Professor Richard Davidson who says mindfulness reduces stress and makes vaccines more effective.
We're going "Back To School" today, revisiting a classic at-home experiment that turns lemons into batteries — powerful enough to turn on a clock or a small lightbulb. But how does the science driving that process show up in household batteries we use daily? Emily Kwong and Maddie Sofia talk battery 101 with environmental engineer Jenelle Fortunato.
A new trial is about to start in the UK, seeing if different vaccines can be mixed and matched in a two-dose schedule, and whether the timing matters. Governments want to know the answer as vaccines are in short supply. Oxford University’s Matthew Snape takes Roland Pease through the thinking.
Despite the numbers of vaccines being approved for use we still need treatments for Covid-19. A team at the University of North Carolina is upgrading the kind of manufactured antibodies that have been used to treat patients during the pandemic, monoclonal antibodies. Lisa Gralinski explains how they are designing souped-up antibodies that’ll neutralise not just SARS-CoV-2, but a whole range of coronaviruses.
Before global warming, the big ecological worry that exercised environmentalists was acid rain. We’d routinely see pictures of forests across the world dying because of the acid soaking they’d had poisoning the soil. In a way, this has been one of environmental activism’s success stories. The culprit was sulphur in coal and in forecourt fuels – which could be removed, with immediate effect on air quality. But biogeochemist Tobias Goldhammer of the Leibniz Institute in Berlin and colleagues have found that sulphur, from other sources, is still polluting water courses.
There’s been debate over when and where dogs became man’s best friend. Geoff Marsh reports on new research from archaeology and genetics that puts the time at around 20,000 years ago and the place as Siberia.
People of color experience more air and water pollution than white people and suffer the health impacts. The federal government helped create the problem, and has largely failed to fix it. NPR climate reporter Rebecca Hersher talks about the history of environmental racism in the United States, and what Biden's administration can do to avoid the mistakes of the past.
Read Rebecca's reporting on how Biden hopes to address the environmental impacts of systemic racism.
Drug overdose deaths are on the rise all around the country, including in Chicago, Illinois. ProPublica Illinois reporter Duaa Eldeib explains how the coronavirus pandemic has exacerbated the opioid epidemic, and the challenges that public health officials are facing as they work to reduce opioid-related deaths.
With a lot of us stuck at home, trying to physically distance from each other, one part of daily life has largely disappeared: bumping into strangers. On today's show, Maddie talks with Yowei Shaw, co-host of NPR's Invisibilia, about the surprising benefits of stranger interactions. And Short Wave tries out QuarantineChat, a workaround to our current strangerless existence. (Encore episode)
What we tell people about ourselves is not exclusively, or often not even majorly, what comes out of our mouths. A host of nonverbal messages emanate from us, many of them intentionally sent to create or reinforce a narrative for a recipient who is left trying to judge the veracity of the sum total of the information. The study of this signaling in the content of an asymmetry of information is known as ‘signalling theory.’
In this Social Science Bites podcast, Diego Gambetta, a professor of social theory at the European University Institute in Florence, discussing his research around signaling theory and the applications of his work, whether addressing courtship, organized crime of hailing a cab.
“The theory,” he tessl interview Dave Edmonds, “has to do with the unobservable qualities of interest. The question is, how much scope do we have to con each other, to cheat each other. … What I would like to know about you is more than is what is apparent. The things that we are interested in are not written on our foreheads.”
Signaling theory’s value, he continues, comes in “trying to establish when truth can be communicated even in conditions that are difficult, in which we expect the interests of the parties communicating to diverge, or to not completely overlap.”
This gives the theory a wide range of applications, which is reflected in its own birthing. Initially formalized by economists, particularly Nobel Prize winner Michael Spence. Who used it to show how can an employer can determine if a job applicant in likely to be highly productive or not. At roughly the same time, Gambetta explains, there was a “an intuitive expression of the theory” by an animal behaviorist, Amotz Zahavi.
In the social and behavioral realm where Gambetta works, signally theory shows in utility whether the parties are in conflict – hence his work examining the Italian mafia -- or cooperation – studying taxi drivers in Belfast and in New York City.
“In a conflict,” Gambetta details, “I may want to persuade you that I am really, really tough. If this is true, and you believe me, then we may sort the conflict out cheaply for both of us because we don’t enter into a damaging fight.” And in cooperation, how do you accept the accuracy of someone’s representations (or convince someone of your own honest representation) that they do indeed possess the qualities they feel, or say, they have.
Given the current mass trial of alleged members of the 'Ndrangheta crime syndicate in Italy, perhaps Gambetta’s work among the mafiosos is is most salient at the moment. “I was alerted to the importance of symbolic communication in the mafia by the way they communicated with each other, and also, on a couple of occasions, with how they communicated with a researcher, myself included. They display a subtlety in communication that surprised me. We tend to expect an organized criminal to excel at brutality and intimidation, but we can’t really expect them to be a lot subtler than we are in communicating.”
He gives the example of a Canadian researcher who announced plans to research the mafia. The researcher’s car was burglarized, his dirty laundry stolen, and a few days later the laundry came back, cleaned and ironed, with a note that said, “Goodbye.” It was, Gambetta noted, “a more enthusiastic rendition of ‘I know where you live.’”
“Violence,” he adds, “is known to us because it leaves a body on the ground, it attracts attention. But there is a subtlety in threatening.” And in Palermo, for instance, there is “an obsessive search for meaning” – the workaday side of the signaling theory coin.
Another workaday aspect revolved around his work studying taxi drivers, who had to determine which passengers they would pick up based on the drivers’ perception of the person hailing them being a fare that was safe and trustworthy. These instant assessments can rely, however, on short-cuts that reek of racial profiling. In New York, for example, Gambetta that even Black drivers wouldn’t pick up young Black people. This essentially removes the service from that population – “the cost of proving your bona fides, that you are a real passenger despite your age and color, is too costly, is too complicated.”
In addition to his professorship at the European University Institute, Gambetta is the Carlo Alberto Chair at the Collegio Carlo Alberto in Turin, and an official fellow at Nuffield College, University of Oxford. Among his books are 2016's Engineers of Jihad, Codes of the Underworld: How Criminals Communicate from 2009, and 1993's The Sicilian Mafia. The Business of Private Protection.
The year 2020 saw a record-breaking wildfire season. With those wildfires came many destroyed homes. Rebuilding with fire-resistant materials reduces the risk of future fires burning down a house, but as NPR science correspondent Lauren Sommer explains, only three Western states require building with fire-resistant materials. Without such improvements, communities face increased risks with the next fire.
When planning to have a baby, women are expected to give up everything from smoking to alcohol, even soft cheese. But the other half of fertility comes from the sperm, usually provided by a man. So should men also give up their vices to improve the quality of their sperm, and their chances of conception?
That’s what Listener Stuart in Australia wants to know. He emailed CrowdScience after he and his wife had been trying to have a second child for two years. He gave up alcohol, and coffee, but wants to know if there is any hard science to back up the idea that this would improve his fertility.
To find out, presenter Anand Jagatia speaks with Professor Allan Pacey, a scientist who specialises in the study of male fertility and sperm. He discovers that male subfertility accounts for 50% the problems with getting pregnant. And we’re far from alone. Sperm is a remarkably diverse, but also fragile cell. Across the animal kingdom, different species have problems with male fertility, but have adapted novel ways to improve their chances of reaching the egg.
Men often struggle to speak about their fertility, and reporter Chhavi Sachdev tells Anand the impact this has on couples in India who struggle to conceive, or don’t want to. She speaks with fertility specialist Professor Nirmal Kumar Lohiya about how this reticence to speak about fertility is changing.
Viruses from Mumps to HIV have long been known to target the delicate sperm production cells in the testicles. Dr Krutika Kuppalli tells Anand why, and what we know about the possible impact of SARS CoV-2 on male fertility.
Professor Allan Pacey gives Anand and Stuart some advice for what to do while trying to conceive - don’t wear tight underwear - and get used to talking about your swimmers or even getting them checked out.
Contributors:
Professor Allan Pacey - Andrologist at the University of Sheffield in the UK.
Dr Nicolla Hemmings, expert on bird sperm, Royal Society Dorothy Hodgkin Research Fellow at the University of Sheffield, UK.
Professor Nirmal Kumar Lohiya, Fertility specialist and co-developer of RISUG male contraceptive, University of Rajasthan, India
Dr Krutika Kuppalli, Assistant Professor at the Medical University of South Carolina, USA
Chhavi Sachdev, Reporter and presenter for CrowdScience
Presented by Anand Jagatia,
Produced by Rory Galloway
With the help of spider scientist Sebastian Echeverri, Maddie presents the case for why spiders are the best and coolest animal. Spoiler alert: some travel thousands of kilometers by "ballooning," while others live part time underwater.
Are you a scientist who thinks Sebastian is wrong and that the animal you study is superior? Let us know! You can email us at shortwave@npr.org. We'd love to hear the case for your critter.
