Science Talk
Science

Science Talk

作者: Scientific American
最近更新: 2024/5/1
Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive ...

Recent Episodes

Episode 1: Uncertainty is Science's Super Power. Make It Yours, Too

Episode 1: Uncertainty is Science's Super Power. Make It Yours, Too

Welcome to Uncertain, a five-part podcast miniseries from Scientific American. Here we will dive head first into the possibilities of the unknowing. Over the next five episodes, I’ll be talking with people like her: explorers who work in the realm of uncertainty. Through them, we’ll discover the ways that uncertainty can spark curiosity and scientific breakthroughs. But we’ll also find out how uncertainty can bite us in the butt and make science really hard. We’ll see how neglecting uncertainty can lead to overconfidence and how embracing uncertainty can allow for a more nuanced and accurate understanding of the world. We’ll finish by examining how it’s possible to have confidence in scientific findings, even with their uncertainties. Learn more about your ad choices. Visit megaphone.fm/adchoices

2024/4/3
1533
Coming Soon: 'Uncertain' - A New Short Series on the Thrill of Not Knowing

Coming Soon: 'Uncertain' - A New Short Series on the Thrill of Not Knowing

Does the word "uncertainty" make you nervous? Does it rule your life? Would you say it kinda describes the state of the world these days?  Enter Uncertain, a new limited podcast series from Scientific American. In this series, host Christie Aschwanden will help to demystify uncertainty. She's going to take away its scariness–or, rather, a cast of scientific dreamers that she talked to, will.  As you’ll see, uncertainty drives scientific discovery. Throughout scientific history, uncertainty has spurred our collective imagination and our need to know the things we don’t.  To be clear, uncertainty makes science very difficult. So in this mini-series we’ll both learn how scientists push through those difficulties; and how they also avoid the bias, logical fallacies, and blindspots that can lurk behind uncertainty. She'll get them to share their own habits of mind and techniques for facing, and embracing, the unknown.  And even if you’re not a scientist, UNCERTAIN provides a practical way to think through what we don’t know in our lives—to face that uncertainty, and, hopefully, live better, more informed lives because of it. Learn more about your ad choices. Visit megaphone.fm/adchoices

2024/3/27
247
Inside the Nail-Biting Quest to Find the 'Loneliest Whale'

Inside the Nail-Biting Quest to Find the 'Loneliest Whale'

It is a tale of sound: the song of a solitary whale that vocalizes at a unique frequency of 52 hertz, which no other whale—as the story goes—can seemingly understand. It is also a tale about science and ocean life, laced with fantasy and mystery and mostly shrouded in darkness. The whale, who is of unknown species and nicknamed “52,” was originally discovered in 1989 and has been intermittently tracked by scientists ever since. Its solitary nature baffled marine researchers. And its very existence captured the attention and hearts of millions of people. But as 52 roams the ocean’s depths, a lot about its nature is still up in the air. No one has ever seen it in the flesh. Scientists have determined that the whale is a large male and possibly a hybrid, and they have speculated that its unique song—too low in frequency for humans and too high for whales—might be a result of a malformation. Scientific American sat down with Josh Zeman, an award-winning filmmaker who created a documentary about 52, to talk not just about his impressive cinematic quest (and it is impressive and beautifully shot) but also the science and academic collaborations that fueled it. The documentary—written and directed by Zeman and executive produced by actors Leonardo DiCaprio and Adrian Grenier—is inspired by the findings of the late bioacoustics scientist William Watkins. It is propelled by passion and curiosity and relies on underwater acoustics to track 52 through the sound-rich and noise-heavy environment of the ocean. A departure for Zeman in terms of genre choice, the film still exudes an air of mystery and sleuthing reminiscent of whodunits. It unfolds like a classic true-crime story, a genre that Zeman, an investigative reporter and a true-crime documentarian, was originally famous for working in. Then again, when Zeman started making the movie, the whale was MIA and had been silent for years. In essence, Zeman reopened a cold case to—in his own words—“set the record straight” and “bring the audience into the world of the whale.” With the help of marine scientists, he followed streams of whale songs and other breadcrumbs in the form of auditory clues, listening in, analyzing, tracking, slowly and persistently narrowing down the circle around 52. Zeman found him, lost him and found him again until eventually the filmmaker made an unexpected revelation about him. It may not be the closure Zeman expected to give to his audiences. But it is definitely a fresh chapter in this evolving tale. Zeman says he is hopeful that other storytellers will take up the mantle and continue to unearth more facts about 52. “What a more beautiful gift can you give than to say, ‘Actually, there’s another chapter.’ And then, 20 years later, somebody else comes in and adds their chapter,” he says. “That’s what storytelling is.” Learn more about your ad choices. Visit megaphone.fm/adchoices

2021/9/28
1191
National Park Nature Walks, Episode 7: Into the Wilderness by Canoe

National Park Nature Walks, Episode 7: Into the Wilderness by Canoe

Here is our next installment of a new pop-up podcast miniseries that takes your ears into the deep sound of nature. Host Jacob Job, an ecologist and audiophile, brings you inches away from a multitude of creatures, great and small, amid the sonic grandeur of nature. You may not be easily able to access these places amid the pandemic, but after you take this acoustic journey, you will be longing to get back outside. Strap on some headphones, find a quiet place and prepare to experience a thunderstorm—and a lazy day of waiting that storm out—inside the Boundary Waters Canoe Area Wilderness in northern Minnesota. Catch additional episodes in the series here.  Learn more about your ad choices. Visit megaphone.fm/adchoices

2021/6/18
1805
The Deepest Dive to Find the Secrets of the Whales

The Deepest Dive to Find the Secrets of the Whales

On Earth Day, Scientific American sits down with National Geographic underwater photographer Brian Skerry to talk about free diving with whales and filming the giant mammals within five meters or less. “We have to get within a few meters of our subject to get good pictures,” Skerry says. “I can't use a 1,000-millimeter lens underwater. Also, the sun has to be out because I can’t light a whale underwater; they're too big.” Skerry has been tracking whales, their hidden lives, their feeding rituals and hunting practices—strategies that differ dramatically from one whale pod to another—for nearly four decades. Both his new book Secrets of the Whales, released on April 6, and Disney+ series with the same title, a four-episode documentary that is narrated by Sigourney Weaver and premieres today, boast jaw-dropping moments. A visual feast of magnificent scenery, the book and streaming series show humpback whales breaching the water surface to catch herring, orcas trailing ancient pathways, narwhals flicking their giant tusks to sting their prey and ghost-white beluga whales frolicking in shallow waters with their young—some of them only a few days old and still dragging around their umbilical cord. The footage that Skerry filmed takes the audience on a tour of whale cultures across Antarctica, Norway, New Zealand, the Cook Islands, Alaska and other places. It tells stories of resilience, familial bonding and intimacy, generational knowledge sharing and deadly encounters—along with rich lives and complex behaviors that are reminiscent of humans and that were sometimes captured on camera for the first time. “If we look at the ocean, through the lens of culture, these animals are doing so many things in many ways that mirror human culture,” Skerry says. The Disney+ series, however, doesn’t only dwell on the magic and wonder of this world. It also warns against the effects of pollution and the ongoing climate emergency on a very delicate and interconnected marine ecosystem. Secrets of the Whales was a perfect story to showcase both aspects, Skerry says, because it lives at the confluence of cutting-edge science and conservation. “I like to say, ‘It's not a conservation story,’” he adds. “And yet it could be the most important conservation story ever because if we can see these animals through that lens of culture, it changes how we perceive nature and our relation to it.” Learn more about your ad choices. Visit megaphone.fm/adchoices

2021/4/22
1668
First in Space: New Yuri Gagarin Biography Shares Hidden Side of Cosmonaut

First in Space: New Yuri Gagarin Biography Shares Hidden Side of Cosmonaut

It’s been 60 years, to the day, since Soviet cosmonaut Yuri Gagarin was the first human to travel to space in a tiny capsule attached to an R-7 ballistic missile, a powerful rocket originally designed to carry a three- to five-megaton nuclear warhead. In this new episode marking the 60th anniversary of this historic space flight—the first of its kind—Scientific American talks to Stephen Walker, an award-winning filmmaker, director and book author, about the daring launch that changed the course of human history and charted a map to the skies and beyond. Walker discusses his new book Beyond: The Astonishing Story of the First Human to Leave Our Planet and Journey into Space, out today, and how Gagarin’s journey—an enormous mission that was fraught with danger and planned in complete secrecy—happened on the heels of a cold war between the U.S. and the Soviet Union and sparked a relentless space race between a rising superpower and an ailing one, respectively. Walker, whose films have won an Emmy and a BAFTA, revisits the complex politics and pioneering science of this era from a fresh perspective. He talks about his hunt for eyewitnesses, decades after the event; how he uncovered never-before-seen footage of the space mission; and, most importantly, how he still managed to put the human story at the heart of a tale at the intersection of political rivalry, cutting-edge technology, and humankind’s ambition to conquer space and explore new frontiers. Learn more about your ad choices. Visit megaphone.fm/adchoices

2021/4/12
1476
National Park Nature Walks, Episode 3: Where Lewis and Clark Trod

National Park Nature Walks, Episode 3: Where Lewis and Clark Trod

Here is our next installment of a new pop-up podcast miniseries that takes your ears into the deep sound of nature. Host Jacob Job, an ecologist and audiophile, brings you inches away from a multitude of creatures, great and small, amid the sonic grandeur of nature. You may not be easily able to access these places amid the pandemic, but after you take this acoustic journey, you will be longing to get back outside. Strap on some headphones, find a quiet place and prepare to experience the transcendence that explorers Meriwether Lewis and William Clark must have felt at the end of their journey—inside a park that bears their names. You can catch more episodes in the series here. Learn more about your ad choices. Visit megaphone.fm/adchoices

2021/4/2
1550
AI Can Now Debate with Humans and Sometimes Convince Them, Too

AI Can Now Debate with Humans and Sometimes Convince Them, Too

Today on the Science Talk podcast, Noam Slonim of IBM Research speaks to Scientific American about an impressive feat of computer engineering: an AI-powered autonomous system that can engage in complex debate with humans over issues ranging from subsidizing preschool and the merit of space exploration to the pros and cons of genetic engineering.  In a new Nature paper, Slonim and his colleagues show that across 80 debate topics, Project Debater’s computational argument technology has performed very decently—with a human audience being the judge of that. “However, it is still somewhat inferior on average to the results obtained by expert human debaters,” Slonim says.  In a 2019 San Francisco showcase, the system went head-to-head with expert debater Harish Natarajan.  Beyond gaming, it’s rare to see humans and machines go against each other, let alone in an oratory competition. Not unlike its human counterpart, the AI was given only 15 minutes to research the topic and prepare for the debate—rifling through thousands of gigabytes of information at record speed to form an opening statement and layer counterarguments that were later delivered through a robotic female voice, in fragments and with near perfect diction.  It couldn’t best Natarajan in San Francisco, but in a different debate, the system—co-led by Slonim and fellow IBM researcher Ranit Aharonov—has managed to change the stance of nine people in a debate on the use of telemedicine, essentially swaying the debate to its side and rebutting the argument of its opponent. In other words, in this realm, humans still prevail. But how do you build the architecture for a complex system like this? Is the AI capable of recognizing meaning or larger contexts in a debate? Can a system descended from Project Debater one day intervene in real-life social media arguments to quell misinformation or stir a debate in one direction or another, for better or worse? We answer these questions and more in the podcast. Learn more about your ad choices. Visit megaphone.fm/adchoices

2021/3/17
937