Science Friday

In the U.S., we’re heading into the fourth month of the COVID-19 pandemic. Social distancing and lockdowns have taken a toll on everyone’s mental and emotional well-being—including children and teens, many of whom may be having trouble processing what’s going on.  Psychologists Archana Basu and Robin Gurwitch discuss the unique issues the pandemic brings up for children and teens. They talk about how parents and caregivers can support the mental health of the kids and teens in their lives, helping them better cope with isolation and uncertainty, as well as learning remotely during the pandemic.  Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Earlier this month, three major tech companies publicly distanced themselves from the facial recognition tools used by police: IBM said they would stop all such research, while Amazon and Microsoft said they would push pause on any plans to give facial recognition technology to domestic law enforcement. And just this week, the city of Boston banned facial surveillance technology entirely. Why? Facial recognition algorithms built by companies like Amazon have been found to misidentify people of color, especially women of color, at higher rates—meaning when police use facial recognition to identify suspects who are not white, they are more likely to arrest the wrong person.  CEOs are calling for national laws to govern this technology, or programming solutions to remove the racial biases and other inequities from their code. But there are others who want to ban it entirely—and completely re-envision how AI is developed and used in communities. In this SciFri Extra, we continue a conversation between producer Christie Taylor, Deborah Raji from NYU’s AI Now Institute, and Princeton University’s Ruha Benjamin about how to pragmatically move forward to build artificial intelligence technology that takes racial justice into account—whether you’re an AI researcher, a tech company, or a policymaker. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Protests Shine Light On Facial Recognition Tech Problems Earlier this month, three major tech companies publicly distanced themselves from the facial recognition tools used by police. IBM CEO Arvind Krishna explained their company's move was because of facial recognition’s use in racial profiling and mass surveillance. Facial recognition algorithms built by companies like Amazon have been found to misidentify people of color, especially women of color, at higher rates—meaning when police use facial recognition to identify suspects who are not white, they are more likely to arrest the wrong person. Nevertheless, companies have been pitching this technology to the government. CEOs are calling for national laws to govern this technology, or programming solutions to remove the racial biases and other inequities from their code. But there are others who want to ban it entirely—and completely re-envisioning how AI is developed and used in communities. SciFri producer Christie Taylor talks to Ruha Benjamin, a sociologist, and AI researcher Deborah Raji about the relationship between AI and racial injustice, and their visions for slower, more community-oriented processes for tech and data science. Hummingbirds See Beyond The Rainbow Conventional wisdom suggests hummingbirds really like the color red—it’s the reason many commercial hummingbird feeders are made to look like a kind of red blossom. But it turns out that two items that both look “red” to humans may look very different to a hummingbird. That’s because these birds can see colors that humans cannot. Humans see colors through photoreceptors called cones, and we have three of them for red, green, and blue colors. But most birds, reptiles, and even some fish also have fourth cone that’s sensitive to UV light. That means they can see further into the spectrum than we can, and that they can see “non-spectral colors”—combinations of colors that aren’t directly adjacent on the rainbow, such as red+UV and green+UV. Mary Caswell Stoddard, an assistant professor of ecology and evolutionary biology at Princeton, set out to study whether hummingbirds actually make use of that ability in their everyday lives. Her team's research was published this week in the academic journal Proceedings of the National Academy of Sciences. A NASA Rover Is Catching A Private Ride To The Moon Last week, NASA announced that it had signed a $199.5 million contract with the private company Astrobotic to deliver NASA’s VIPER rover to the moon in 2023. The company will be responsible for the rover for getting the rover from Earth into space, up until the moment the rover rolls onto the lunar surface near the moon’s south pole. The rover is designed to explore for water and other resources—especially the large stores of water ice that scientists suspect may be frozen in lunar polar regions. Astrobotic CEO John Thornton joins Ira to talk about the challenges of building a new lunar lander, and the increasing involvement of commercial industry in the U.S. space program.   Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

A Crisis Of Health In Healthcare Workers Content Warning: This segment contains talk of suicide. For help for people considering suicide, call the National Suicide Prevention Lifeline: 1-800-273-8255 Depression and anxiety are extremely common in healthcare workers, and they have higher rates of suicide than the general public—doctors in particular are twice as likely to die by suicide. That’s when the world is operating normally. Now, healthcare workers are also dealing with a devastating pandemic, and the uncertainty surrounding a new disease. And some healthcare workers are using what little emotional labor they have left to advocate in the streets and online for racial justice.  Joining Ira to talk about burnout in the healthcare industry are Steven McDonald, an assistant professor of emergency medicine at Columbia University Irving Medical Center in New York, and Kali Cyrus, a psychiatrist and assistant professor at the Johns Hopkins University School of Medicine in Washington, D.C. Insights From International Doctors On The Frontlines Of The Pandemic   In March, governors Andrew Cuomo in New York and Gavin Newsome in California put out a call for medical professionals to come to their states to help with the COVID-19 crisis. Many of those on the frontlines aren’t just from out of the state, but from out of the country. International medical professionals are estimated to make up a quarter of working doctors in the U.S.   Journalist Max Blau talks about the role of international doctors in the U.S. medical system and how they have been affected during the pandemic. Then international resident physicians Quinn Lougheide and Muhammad Jahanzaib Anwar share stories from aiding COVID-19 patients in Bronx, New York. PG&E Guilty Plea Sets A Precedent For Climate Change Culpability   In 2018, the devastating Camp Fire wildfire swept through northern California, killing 84 people. Utility giant Pacific Gas & Electric, or PG&E, was deemed to be responsible for the spark that caused the fire. This week, the company pled guilty to involuntary manslaughter for the deaths, marking the first case of its kind. The decision sets a precedent for future legal battles over holding companies accountable for climate change, and how that burden should be split.  Vox staff writer Umair Irfan joins Ira to talk about the PG&E case, plus more on why a second round of COVID-19 lockdowns might not work as well as the first shelter in place orders.   Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

In the 1980s and 1990s, in the midst of rising crime rates and a nationally waning confidence in policing, law enforcement around the country adopted a different approach to addressing crime. Instead of just reacting to crime when it happened, officers decided they’d try to prevent it from happening in the first place, employing things like “hot spots” policing and “stop and frisk,” or “terry stops.” The strategy is what criminologists call proactive policing, and it’s now become widely used in police departments across the nation, especially in cities. Critics and experts debate how effective these tactics are in lowering crime rates. While there’s some evidence that proactive policing does reduce crime, now public health researchers are questioning if the practice—which sometimes results in innocent people being stopped, searched, and detained—comes with other unintended physical and mental health consequences. Samuel Walker, emeritus professor of criminology at the University of Nebraska Omaha and an expert in police accountability, reviews what led police departments to adopt a more proactive approach, while medical sociologist Alyasah Ali Sewell explains the physical and mental health impacts of stop-question-and-frisk policing. Over the past few months, people’s social lives have transformed. We’re now told to stay home, and when we do go out, to maintain at least six feet between ourselves and others—forget about a handshake or a hug. Many are now isolated in their homes, with just a screen and its two-dimensional images to keep them company. But our brains are wired for social connections. “We’re social primates,” says psychiatrist Julie Holland. “It’s in the job description.”  Holland’s new book, Good Chemistry: The Science of Connection, from Soul to Psychedelics, looks at what happens to the brain’s chemistry when we connect socially, and how devastating disconnections can be. She joins Ira to talk about the social life of the brain, community, and the mental health impact of the stressful times we’re living in. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

During the pandemic, immunologist Anthony Fauci has gained fame as “America’s doctor.” He’s a leading scientist in the government’s response to COVID-19, and a celebrated teller of truths—uncomfortable as they may be—like how long the world may have to wait for a vaccine, or the lack of evidence for using the malaria drug hydroxychloroquine on COVID-19 patients. He’s also not new to public health crises created by new pathogens. If history is any indicator, it is not a matter of if, but when another outbreak of disease will come, Fauci says. “There will be emerging and re-emerging infections in our history, it’s been that way forever. We’re seeing it now. And we will continue to see emerging and re-emerging infections,” Fauci tells Ira during the interview. “We can expect, but you can’t predict when. It may be well beyond the lifespan of you and I. But sooner or later, we’re going to get other serious outbreaks. So we have to maintain the memory of a degree of preparedness that would allow us to respond in an effective way the next time we get something like this.” He and Ira reflect on the AIDS epidemic, lessons learned from past pandemics, and what the path out of the COVID-19 crisis may look like. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

‘Radical’ Explores The Hidden History Of Breast Cancer  Nearly 270,000 women are diagnosed with breast cancer every year, along with a couple thousand men. But the disease manifests in many different ways, meaning few patients have the same story to tell.  Journalist Kate Pickert collects many of those stories in her book Radical: The Science, Culture, and History of Breast Cancer in America. And one of those stories is her own. As she writes about her own journey with breast cancer, Pickert delves into the history of breast cancer treatment—first devised by a Scottish medical student studying sheep in the 1800s—and chronicles the huge clinical trials for blockbuster drugs in the 80s and 90s—one of which required armies of people to harvest timber from the evergreen forests of the Pacific Northwest.  She joins Ira Flatow to tell her story, and the surprising cultural history of breast cancer.  With Butterfly Wings, There’s More Than Meets The Eye  Scientists are learning that butterfly wings are more than just a pretty adornment. Once thought to be made up of non-living cells, new research suggests that portions of a butterfly wing are actually alive—and serve a very useful purpose.  In a study published in the journal Nature Communications, Naomi Pierce, curator of Lepidoptera at the Harvard Museum of Comparative Zoology, found that nano-structures within the wing help regulate the wing’s temperature, an important function that keeps the thin membrane from overheating in the sun. They also discovered a “wing heart” that beats a few dozen times per minute to facilitate the directional flow of insect blood or hemolymph.  Pierce joins Ira to talk about her work and the hidden structures of butterfly wings. Plus, Nipam Patel, director of the Marine Biological Laboratory, talks about how butterfly wing structure is an important component of the dazzling color on some butterfly wings. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

This week, the killings of George Floyd, Breonna Taylor, and other Black Americans by police brutality and racial inequality continue to fuel demonstrations around the nation. In many cities, police are using tear gas, rubber bullets, and other control tactics on protesters.  A history of 50 years of research reveals what makes a protest safe for participants and police alike. The findings show that police response is what makes the biggest difference: de-escalating and building trust supports peaceful demonstrations rather than responding with weapons and riot gear. And, as thousands of protesters risk abrasive, cough-inducing tear gas and mass arrests, health researchers are concerned a militant response could increase demonstrators’ risk of acquiring COVID-19.  Maggie Koerth, senior science writer for FiveThirtyEight and a Minneapolis, Minnesota resident, joins Ira to discuss these stories.   Dermatologists presented with a new patient have a number of symptoms to look at in order to diagnose. Does the patient have a rash, bumps, or scaling skin? Is there redness, inflammation, or ulceration? For rare conditions a doctor may have never seen in person before, it’s likely that they were trained on photos of the conditions—or can turn to colleagues who may themselves have photos. But in people with darker, melanin-rich skin, the same skin conditions can look drastically different, or be harder to spot at all—and historically, there have been fewer photos of these conditions on darker-skinned patients. And for these patients, detection and diagnosis can be life-saving: people of color get less melanoma, for example, but are also less likely to survive it. Dr. Jenna Lester, who started one of the few clinics in the country to focus on such patients, explains the need for more dermatologists trained to diagnose and treat people with darker skin tones—and why the difference can be both life-saving and life-altering. A cup of coffee first thing in the morning is a ritual—from grinding the beans to boiling the water and brewing your cup. But following those steps won’t always get you a consistent pour. Researchers developed a mathematical model to determine how the size of grind affects water flow and the amount of coffee that gets into the final liquid. Their results were published in the journal Matter. Computational chemist Christopher Hendon, who was an author on that study, talks about how understanding atomic vibration, particle size distribution, and water chemistry can help you brew the perfect cup of coffee. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

One unintended consequence of families sheltering at home is that children’s vaccination rates have gone way down. In New York City, for example, vaccine doses for kids older than two dropped by more than 90 percent. That could mean new outbreaks of measles and whooping cough, even while we’re struggling with COVID-19. Joining Ira to talk about decreasing vaccination rates are two pediatricians, James Campbell, professor of pediatrics at the University of Maryland School of Medicine in Baltimore, and Amanda Dempsey, professor of pediatrics at the University of Colorado Denver. Electronic musician Grace Leslie makes music that creates a sense of calm—long notes held on the flute, creating rich tones, and layered sounds. But her method for creating her songs sets her apart from most other electronic musicians: Leslie collects heartbeats, neuroelectric activity, and other biofeedback with sensors on people’s bodies. She feeds this input into a computer, which then converts the data into flowing waves of sound.  As a researcher at Georgia Tech in Atlanta, she explores how the brain and body react to music at the university’s School of Music. Leslie joins Ira to talk about her methods for creating art, and the mysteries of why music elicits an emotional response from those who listen. Hydroxychloroquine, the malaria drug the president promoted as a treatment for COVID-19, has not been proven effective against the virus. And new research published in The Lancet, involving 96,000 patients around the world, found the drug is linked to irregular heartbeats and increased risk of death for people who take it. As a result, numerous trials to further understand the drug have been put on hold, including one planned by the World Health Organization. IEEE Spectrum news editor Amy Nordrum joins Ira to explain what this means for the future of understanding hydroxychloroquine as a potential help against coronavirus. Plus, understanding false negative results in COVID-19 tests, engineering virus-killing masks, and how researchers found a way to trail elusive narwhals and record their sounds—all in the name of understanding these shy, sea ice-dwelling mammals better even as the world they depend on changes.   Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

The human microbiome—our own personalized bacteria profile—plays a part in our health. The different parts of our body, from our skin to our gut, each have their own microbial profile. A team of researchers decided to explore the bacteria living inside our nose, publishing this week in the journal Cell Reports. Microbiologist Sarah Lebeer, one of the authors of the study, discusses what beneficial bacteria reside in our nose—and how this could be used to create a probiotic for upper respiratory infections. Concrete is a seemingly simple mix of wet cement, but it’s been the foundation of many civilizations. Ancient Mayans and Romans used concrete in their structures, and it is the basic building block of the sky-scraping concrete jungles we inhabit today. But it turns out, it’s still possible to improve. In an effort to create crack-free concrete that can resist the stresses of freezing temperatures, one group of researchers looked to organisms that live in sub-zero environments. Their results were published this week in the journal Cell Reports Physical Science. Engineer Wil Srubar, who is an author on that study, talks about how nature can serve as inspiration in the quest to create more sustainable concrete, wood, and other building materials. On Wednesday, a planned launch of two astronauts from Cape Canaveral had to be scrubbed due to weather. The launch would have been the first crewed flight to the space station launched from U.S. soil since 2011—and will use a Dragon rocket built by the private company SpaceX. There will be a second launch attempt this weekend. The Commercial Crew program began in 2011 to develop private launch capabilities to replace the retired space shuttle. Now, nine years later, is private industry finally ready to take over responsibilities that were once the territory of national governments? Miriam Kramer, who writes the space newsletter for Axios, and Brendan Byrne, who reports on space for public radio station WMFE in Orlando, join Ira to talk about the DEMO-2 crewed launch and other spaceflight news.       Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.