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Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive sonic journeys into nature to deep dives into research with leading experts.

Science Talk

On this show, we’ve been talking about uncertainty from a variety of different angles.
We’ve heard how uncertainty can be a spark for creativity and scientific discovery.
We’ve discussed how uncertainty can go unseen and make science really difficult.
And we’ve explored some of the research techniques and habits of mind that researchers use to deal with uncertainty.
Today we’re going to end with two final questions: If science is always uncertain, how can we ever know anything? How can we have confidence in science if there’s always underlying uncertainty?
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Episode 5: How Do We Know Anything?

Science is an iterative process. Progress comes from people coming up with ideas that are sort of right and then new evidence and ideas coming in to update them to become even more correct.
Underlying this process is a willingness by scientists to accept that they might be wrong and be open to updating their ideas.
It turns out that social scientists have a term for this mindset. To find out more, I talked with two researchers who are studying this thing they call “intellectual humility.”
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Episode 4: This Simple Strategy Might Be the Key to Advancing Science Faster

Today’s episode of Uncertain is about the ways that studies can leave us overconfident and how “just-so stories” can make us feel overly certain about results that are still a work in progress. And sometimes studies get misleading results because of random error or weird samples or study design. But sometimes science gets things wrong because it’s done by humans, and humans are fallible and imperfect.
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Episode 3: When Uncertainty Hides in the Blindspot of Overconfidence

In this episode, we’ll talk with two researchers whose work probes the uncertainty surrounding how we perceive the world around us. 
It turns out that what we see may not always be a perfect reflection of reality. 

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Episode 2: Think Seeing is Believing? Think Again

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.

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

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

What is behind the Black maternal mortality crisis, and what needs to change? In this podcast from Nature and Scientific American, leading academics unpack the racism at the heart of the system.
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Racism in Health: The Roots of the U.S. Black Maternal Mortality Crisis

In the newest season of Lost Women of Science, we enter a world of secrecy, computers and nuclear weapons—and see how Klára Dán von Neumann was a part of all of it.
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Love Computers? Love History? Listen to This Podcast

The World Economic Forum and Scientific American team up to highlight technological advances that could change the world—including self-fertilizing crops, on-demand drug manufacturing, breath-sensing diagnostics and 3-D-printed houses.
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Top 10 Emerging Tech of 2021

A new podcast is on a mission to retrieve unsung female scientists from oblivion.
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Listen to This New Podcast: The Lost Women of Science

Scientific American

In this episode University of North Carolina Chapel Hill nutrition epidemiologist Barry Popkin discusses the growing problem of obesity, even in developing countries that only recently faced hunger as their primary diet challenge. Popkin is the author of the article The World Is Fat in the September Scientific American. Plus we'll test your knowledge of some recent science in the news. Websites mentioned on this episode include: www.nutrans.org; wwwtheskepticsguide.org
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The World Is Fat: Obesity Now Outweighs Hunger WorldWide

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