Science Friday Folgen

Billions Of Sea Creatures, Lost To Heat Waves A couple weeks ago, the Pacific Northwest saw record-breaking temperatures. News coverage captured countless people suffering, and dying, during triple-digit heat the region had never seen before. Portland and Seattle reached their highest temperatures ever recorded. Canada set a new record for the highest temperature ever seen in the country with a measurement of 118 degrees Fahrenheit in British Columbia. However, there are still more victims of the climate crisis tragedy in the Pacific Northwest: coastal wildlife. Experts estimate that over the course of that one scorching weekend, over a billion sea creatures died. Starfish, mussels, oysters, clams, barnacles, sea snails—all of these animals and more virtually baked to death on the beach as they sat, helpless, in the intense heat during low tide.  Chris Harley, a marine biologist at the University of British Columbia, witnessed this die-off firsthand. He joins Ira to talk about what this loss means for the future of life along the coast.      EPA Whistleblowers Allege ‘Atmosphere Of Fear’ Earlier this month, four whistleblowers from the Environmental Protection Agency’s (EPA) chemical safety office went public with allegations of intimidation and downplayed chemical risks, stating: “The Office of Chemical Safety and Pollution Prevention is broken… The entire New Chemicals program operates under an atmosphere of fear—scientists are afraid of retaliation for trying to implement TSCA the way Congress intended, and they fear that their actions (or inactions) at the direction of management are resulting in harm to human health and the environment.” John Dankosky spoke with two of the whistleblowers, along with Sharon Lerner, an investigative reporter who originally broke this story for The Intercept. As EPA staff, they were not authorized to speak with the press, but chose to participate in this interview as private citizens regarding a matter of public concern. We contacted the EPA and received the following statement: “This Administration is committed to investigating alleged violations of scientific integrity. It is critical that all EPA decisions are informed by rigorous scientific information and standards. As one of his first acts as Administrator, Administrator Regan issued a memorandum outlining concrete steps to reinforce the agency’s commitment to science. EPA takes seriously all allegations of violations of scientific integrity. EPA’s scientific integrity official and scientific integrity team members will thoroughly investigate any allegation of violation of EPA’s scientific integrity policy that they receive and work to safeguard EPA science. Additionally, EPA is currently reviewing agency policies, processes, and practices to ensure that the best available science and data inform Agency decisions. EPA is committed to fostering a culture of evaluation and continuous learning that promotes an open exchange of differing scientific and policy positions. Additionally, retaliation against EPA employees for reporting violations alleged to have occurred will not be tolerated in this administration.   EPA leadership are reviewing these complaints, and any appropriate action will be taken.”   How The Humpback Says Hello A humpback whale makes two kinds of noises. The first are songs, long, elaborate, patterned and rhythmic vocalizations made by mature males, with some connection to the mating ritual. Within any given pod, every male sings the same song, but the songs themselves are different in pods around the world. The second kind are calls, short sounds made by every whale, that seem much more consistent across populations and over time. Of around 50 documented kinds of calls, scientists have settled on the meaning of one for sure: the sound the whales make when feeding on one specific kind of fish. In the decades since scientists first began to investigate the calls and songs of humpback whales, the exact function of these noises has been a tough mystery to crack. Humpbacks’ watery habitat makes researching them difficult and expensive, and the whales themselves live on slow time scales that make leaps in understanding a process that can take decades.  Now, the new documentary Fathom tells the story of two researchers working to further understand what humpback whales are saying, and why they say it. Cornell University researcher Michelle Fournet investigated a call—the ‘whup’ call—that seems to be a greeting, and found when she played the sound underwater, the whales responded back to her. And University of St. Andrews scientist Ellen Garland scoured recordings of South Pacific humpbacks to find out how pods will suddenly adopt new songs despite little contact with other populations. Ira talks to Garland and Fournet about their work, the complexity of whale communication, and how understanding it better could help save them from human threats. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Flooding Worldwide Fits Climate Change Models While the western United States is burning again this summer, other parts of the world are drowning. Germany, Belgium, and China saw floods this week after intense rainstorms that dropped many inches of rain in matters of hours, killing hundreds and displacing thousands. In Turkey and Nigeria, less deadly rain events throughout July have still flooded streets and destroyed homes. And as climate change continues around the globe, scientists say these intense rain events will only worsen, putting flood-prone areas at risk of longer-lasting, and faster-raining storms. FiveThirtyEight science writer Maggie Koerth talks to Ira about the rising cost of rain events under climate change. Plus, why climate change may be hurting monarch butterflies more than a lack of milkweed, a first step toward experiments in geoengineering, and how Australia’s cockatoos are spreading a culture of dumpster-diving.     Biden’s Surgeon General On How To Tackle Vaccine Hesitancy It’s a tale of two pandemics. In some parts of the country, communities are opening up, saying it’s time to get back to normal. In other pockets of the country, infection numbers and hospital admissions are creeping up again—and some places, such as Los Angeles County, have moved to reinstate mask mandates, even for the vaccinated.   The key factor in the pandemic response in many communities is the local vaccination level, with outlooks very different for vaccinated and unvaccinated people. But even as public health workers advocate for widespread vaccination, misinformation and disinformation is discouraging some vulnerable people from taking the vaccine. Dr. Vivek Murthy, Surgeon General of the United States, joins Ira to talk about vaccine hesitancy, the U.S. response to the pandemic, preparing for public health on a global scale, and post-pandemic public health priorities.      Will Blockchain Really Change The Way The Internet Runs? The internet has changed quite a bit over the last few decades. People of a certain age may remember having to use dial-up to get connected, or Netscape as the first web browser. Now, social networking is king, and it’s easier than ever to find information at the click of a mouse. But the modern internet has massive privacy concerns, with many sites collecting, retaining, and sometimes sharing user’s personal information. This has led many technology-minded people to think about what the future of the web might look like. Enter blockchain, a decentralized database technology that some say will change the way the internet runs, while giving users more control over their data. Some say that blockchain will be the basis for the next version of the internet, a so-called “Web 3.0.”  But where are we now with blockchain technology, and can it be everything we want it to be? Joining Ira to wade through the jargon of blockchain and the future of the internet is Morgen Peck, freelance technology journalist based in New York.   Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

Songbirds Suffer Mystery Illness From The East Coast To The Midwest The reports started in late May: Songbirds in Washington, D.C. and neighboring regions were being found dead, often with swollen and crusty eyes. In the days that followed, similar sightings came from many states, including Kentucky, Virginia, Pennsylvania, and New Jersey. Now, the symptoms have been seen as far west as Indiana—but wildlife experts still aren’t sure what’s causing the deaths.  The illness has affected many species, including American robins, blue jays, common grackles, and European starlings. So far, investigators have found no signs of   salmonella and chlamydia; avian influenza virus; West Nile virus and other flaviviruses; Newcastle disease virus and other paramyxoviruses; herpesviruses and poxviruses; or Trichomonas parasites. But unfortunately, their tests have been inconclusive as to the actual cause. Experts are asking people in the affected areas to be on the lookout for birds with crusty eyes or behaving strangely—and in an effort at avian social distancing, they’re suggesting removing bird feeders until the cause of the ‘mortality event’ is known.  Ira talks with Allisyn Gillet, state ornithologist for Indiana, and Lisa Murphy, a toxicologist and co-director of the Wildlife Futures Program at the University of Pennsylvania School of Veterinary Medicine, about what’s known so far about the illness, and about what steps investigators are taking to try to solve the medical mystery.  If you find a bird exhibiting these symptoms, researchers encourage you to report it to the Wildlife Futures Program at the University of Pennsylvania.     Sweating Is Our Biological Superpower Sweat may feel like a constant summer companion, whether or not you exercise frequently. Being damp can feel uncomfortable, but the smells that follow—thanks to the lives and deaths of sweat-munching bacteria—are often socially stigmatized as well. (Deodorant itself is actually a very recent invention!) But sweat isn’t just a cosmetic embarrassment: It’s crucial to keeping us cool, as the evaporating liquid pulls heat energy from our bodies. If you look at animals that don’t sweat, many have evolved alternate adaptations like peeing or even pooping on body parts to achieve that vital evaporative effect. People who are born unable to sweat run a constant risk of heatstroke. Ira talks to Sarah Everts, author of the new book, The Joy Of Sweat, about what makes sweat useful, the cool chemistry of this bodily fluid, and why it’s our evolutionary superpower.      Betelgeuse’s False Supernova Alarm The famous red giant star, Betelgeuse, sits on the left shoulder of the constellation Orion. It’s one of the brightest stars in the night sky, distinguishable by its faint red hue.  In December 2019, the star suddenly dimmed to about a third of its usual brightness. Scientists called this the ‘Great Dimming.’ And there was some speculation in the news that the dimming meant Betelgeuse was about to explode in a giant supernova. But within months, Betelgeuse quietly returned to its original brightness, leaving astronomers perplexed. Now, nearly two years after the initial dimming, a study recently published in Nature proposed a theory for Betelgeuse’s Great Dimming. Supernova expert Sarafina Nance joins Ira to talk about Betelgeuse, give an outside perspective on the new Nature study, and discuss her science communication work.    Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.