Category: ScienceNews

Asked and answered: why some of you might be more prone to being bitten by mosquitoes* than others. Turns out, some interesting factors could make you more appetizing. Plus, in true micro wave fashion, we go over some of your delightful listener mail.

*In general, much more research needs to be done to understand all the nuances of what makes us so appealing to some mosquitoes.

Email us your scientific questions, praise, comments and concerns at shortwave@npr.org. It just might end up in an episode!

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With the announcement in the UK of investment in rapid testing for people who may not have Covid -19 we ask why is this only happening now? For months on this programme we’ve featured scientific research suggesting such a strategy would be the quickest way to end the pandemic.

We speak with Connie Cepko and Brian Rabe who have developed a rapid test and Manu Prakash who is currently rolling it out to countries in the global south.

Could a huge motorcycle rally really have been the source of over a quarter of a million Covid -19 infections? That’s the finding of a study by economist Andrew Friedson he tells us how mobile phone data helped to determine that figure.

And the politics of vaccines, Many health officials in the US have spoken out against president Trumps claim that a vaccine may be ready before the November presidential election. Helen Branswell from Stat news tells us why there is so much concern over political attempts to manipulate science.

(Image:Getty Images)

Presenter: Roland Pease Producer: Julian Siddle

NPR science correspondent Nell Greenfieldboyce had to know more when she recently heard this mind-bending fact for the first time: a quarter of all known animal species are beetles.

Turns out — it's not just that beetles are incredibly diverse. It's that they inspire a lot of passionate study within the scientific community. But there's at least one other animal that might give beetles a run for their money.

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Fire has always been part of California's landscape. But long before the vast blazes of recent years, Native American tribes held controlled burns that cleared out underbrush, encouraged new plant growth, and helped manage wildfires. It's a tradition that disappeared with the arrival of Western settlers. NPR climate correspondent Lauren Sommer explains how tribal leaders are trying to restore the practice by partnering up with state officials who are starting to see cultural burns as a way to help bring extreme wildfires under control.

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About 30% of people in science and engineering jobs in the U.S. were born outside the country. So when the Trump Administration suspended certain work visas in June, including one held by a lot of international scientists, research labs across the nation felt the effects. On the show, we talk to a physicist affected by the order, and The Chronicle of Higher Education's Karin Fischer about what policies like this mean for science research in the U.S.

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As the toll from the COVID-19 pandemic increased, polling suggests counterintuitively that resistance to a future vaccine has also risen. Anthropologist Heidi J. Larson identified several likely drivers of this, including political polarization, a focus on being ‘natural,’ the undercurrent of mistrusting the so-called elite. But in this Social Science Bites podcast, she tells interviewer Dave Edmonds that there’s another driver.

Scientists themselves.

Families who have some expertise in running their own affairs can come to resent “the elitism of science, the language of science, the ‘we know better’” which dismisses their experiences and more importantly, their questions. “A lot of parents feel very strongly feel that they have their own evidence of vaccine problems,” she notes, and the medical establishment has often not invested a lot into bringing the public along – even as the number of vaccines and the expectation of being vaccinated grows.

“[The public is] saying, wait a minute – we want to have say in this, we want to be able to ask some questions … [W]hen they feel like the door in closed on the questions, that shuts down the conversation. I think in order to become unstuck, we need to have more dialog and be open.”

Stuck is the name of Larson’s new book. Besides the obvious pun in the title, Larson explains Stuck: How Vaccine Rumors Start -- and Why They Don't Go Away also refers to being “stuck in the conversation, why the public health community has been losing some of the public enthusiasm for vaccines.”

These are questions and concerns Larson routinely addresses in her role as director of the Vaccine Confidence Project, a World Health Organization (WHO) Centre of Excellence that addresses vaccine hesitancy, and as a professor of anthropology, risk and decision science at the London School of Hygiene & Tropical Medicine’s Department of Infectious Disease Epidemiology.

The first organized opposition to compulsory vaccination arose in the United Kingdom in the late 1800s, she explains, as a reaction to mandatory smallpox vaccinations. “To this day that is one of the persistent themes that has fueled some of this resistance.”

Nonetheless, as vaccinations remain one of the most remarkable health interventions available, the resistance that might be expected to erode in the face of a global health emergency hasn’t faded.

“Strangely, in the context of the pandemic, the already amplified skepticism has taken another level of resistance, which is surprising to many of us. You’d think with such a serious disease and a pandemic it would be a time where people would say, ‘Wow, this is really an example of why we really need a vaccine.’”

And the resistance, whether to a coronavirus vaccine or to vaccine in general, can be seen globally. In fact, Larson is seeing resistance groups linking up across borders – and an a most inopportune time.  “I see the whole increase in the anti- and skepticism as being kind of a tipping point … We’ve always had all these other issues that have been challenging in getting enough people vaccinated, both from the supply of the vaccine and the access, logistics and all the rest. But this additional factor – we’ve stagnated in our global vaccination coverage and just can’t seem to get above a certain amount.” And those coverage levels in some cases fall below the thresholds needed for “herd immunity,” which in turn means we can expect more cases, whether or COVID, measles or even polio.

Social media has helped skeptics get their messages disseminated, and Larson notes that the Wakefield autism scare arose the same year as the start of Google. “The sentiments are not new,” she says, “but the scale and intensity of them is.”

In addition to her position in London, Larson is also a clinical professor in the Department of Global Health at the University of Washington and a guest professor at the University of Antwerp. She previously headed global immunization communication at UNICEF, chaired the Advocacy Task Force for the Gates Foundation-sponsored Gavi, the Vaccine Alliance, and served on the WHO Strategic Advisory Group of Experts Working Group on vaccine hesitancy.

A new survey of the volcano's activity suggests there may be an eruption in the next 4 to 7 years. It's a particular concern for the populations of Goma and Gisenyi, two cites between the volcano and lake Kivu. As we hear from the director of the Goma Volcano Observatory Katcho Karume, the city of Goma in particular has expanded so much that many people now live right next to fissures in the flank of the volcano through which any eruption would likely occur.

Hurricane Laura made landfall in Louisiana's main area of swamp land, missing big urban areas to either side. It was a lucky escape for many, but as hurricane historian Jill Trepanier tells us such extreme weather events do seem to be more frequent and potentially more destructive.

And wildfires ravaging California and other Western US states may have been intensified by changes to global weather systems . Climate scientist Bill Lau says those weather systems in turn have been modified by man-made climate change.

In November 2018 a Chinese scientist announced he had edited the genes of twin girls. The announcement was greeted with horror by many researchers in the field. Now a way to regulate gene editing internationally has been proposed by some of the world's leading scientific institutions. Kay Davies co-author of their report explains the plan.

What does science say about controlling urination, and other bodily functions? We tackle three queries about peeing triggers, pooing positions and missing sweat. This episode CrowdScience presenter Marnie Chesterton poses some of the best listener follow-up questions that have landed in our inbox to a panel of experts.

Listener Samuel in Ghana is wondering why watery sounds seem to induce urination. Producer Melanie Brown heads out to survey whether this is the case for individuals in an actual crowd at a public fountain in London. And urologist and trustee of the International Continence Society Marcus Drake talks Marnie through how he uses the sound of running water during his work as a hospital doctor helping patients with common but distressing peeing issues, and the limitations of research into this question.

And he's not the only listener who wants us to dig deeper into topics we've explored on the show before. Anna in Tokyo also got in touch after hearing our show about toilets, to ask if there is a toilet design that is most 'natural' for our health. Gastroenterologist Anton Emmanuel explains why small changes in people's posture whilst pooing can have a significant impact on their quality of life.

Finally, listeners Stelle, James and Joel emailed crowdscience@bbc.co.uk after hearing Marnie investigate hyperhidrosis: Sweating too much. They and their relatives experience the opposite.

(Main Image: Sunset, Goma, Democratic Republic of Congo. Credit: Shamim Shorif Susom / EyeEm / Getty Images)

What does science say about controlling urination, and other bodily functions? We tackle three queries about peeing triggers, pooing positions and missing sweat. This episode CrowdScience presenter Marnie Chesterton poses some of the best listener follow-up questions that have landed in our inbox to a panel of experts.

Listener Samuel in Ghana is wondering why watery sounds seem to induce urination. Producer Melanie Brown heads out to survey whether this is the case for individuals in an actual crowd at a public fountain in London. And urologist and trustee of the International Continence Society Marcus Drake talks Marnie through how he uses the sound of running water during his work as a hospital doctor helping patients with common but distressing peeing issues, and the limitations of research into this question.

And he’s not the only listener who wants us to dig deeper into topics we’ve explored on the show before. Anna in Tokyo also got in touch after hearing our show about toilets, to ask if there is a toilet design that is most ‘natural’ for our health. Gastroenterologist Anton Emmanuel explains why small changes in people’s posture whilst pooing can have a significant impact on their quality of life.

Finally, listeners Stelle, James and Joel emailed crowdscience@bbc.co.uk after hearing Marnie investigate hyperhidrosis: Sweating too much. They and their relatives experience the opposite:

*Astrophysically speaking. That's the subject of Katie Mack's new book: the possible ends to our entire universe. Specifically, she breaks down some following potential outcomes: heat death, the big crunch and vacuum decay. (Spoiler alert: the names of the other scenarios we don't get to in this episode are just as cool.)

Email the show your existential questions at shortwave@npr.org. But please, no existential dread at this time — we're full up on that.

P.S. We're off Monday for Labor Day. So, catch you Tuesday!

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A new survey of the volcano's activity suggests there may be an eruption in the next 4 to 7 years. It's a particular concern for the populations of Goma and Gisenyi, two cites between the volcano and lake Kivu. As we hear from the director of the Goma Volcano Observatory Katcho Karume, the city of Goma in particular has expanded so much that many people now live right next to fissures in the flank of the volcano through which any eruption would likely occur.

Hurricane Laura made landfall in Louisiana's main area of swamp land, missing big urban areas to either side. It was a lucky escape for many, but as hurricane historian Jill Trepanier tells us such extreme weather events do seem to be more frequent and potentially more destructive.

And wildfires ravaging California and other Western US states may have been intensified by changes to global weather systems . Climate scientist Bill Lau says those weather systems in turn have been modified by man-made climate change.

In November 2018 a Chinese scientist announced he had edited the genes of twin girls. The announcement was greeted with horror by many researchers in the field. Now a way to regulate gene editing internationally has been proposed by some of the world's leading scientific institutions. Kay Davies co-author of their report explains the plan.

Presenter: Roland Pease Producer: Julian Siddle

(Main Image: Sunset, Goma, Democratic Republic of Congo. Credit: Shamim Shorif Susom / EyeEm / Getty Images)