She’s a pioneer in figuring out how we might tell if any of the trillions of planets out there in the galaxy might harbor life – and if so, what kind of life.


A clarion call to those of us acutely aware of the peril facing our planet yet feel powerless to help save it. Ayana Johnson urges us to stop fretting about what “I” can do and instead think about what “we” can do, by joining our own skills and passions with those of others – and have fun doing it. Then, she asks in her provocative new book, What If We Get It Right?


Ayana Johnson: We Can Do This!

Escaping the Covid lockdown in 2020 he and his wife Laurel set out in an RV to travel across America along the Lincoln Highway – a road more aspirational than real. But with Abraham Lincoln’s spirit as their guide they talked with the people they met along the way to explore the urgent question of what can hold our fractured country together.


Frank Barry: Taking the Lincoln Highway to America

Is improvisation at the heart of Western culture — music, art, literature, politics, even artificial intelligence?  Author Randy Fertel thinks so. And he warns that as much as it’s a positive force, there’s also peril in it.


Randy Fertel: Improv Everywhere

Alan talks with Roger Rosenblatt about his new book “A Steinway on the beach.” It explores that great mystery of how being wounded—emotionally or physically—is both an inescapable part of life and a chance to illuminate it. It’s seeing the wound as the place where the light enters you.


Roger Rosenblatt: Wounds and Other Blessings

Lisa Kaltenegger: Alien Hunter

Chance events not only change lives, they can change history – as when a soviet sailor’s briefly stuck foot prevented a potential nuclear catastrophe. You can’t predict when luck, good or bad, will intervene. But you can learn to take advantage of it.


Mark Rank: As Luck Would Have It

Over time, the meaning of words often changes. The history of these changes suggests they're inevitable and that some of us (like our host) could be a little more relaxed about it and a little less peevish.


Anne Curzan: Say What? Says Who?

Older people, says Mo Rocca, have better stories. And he tells many of them – stories of people as different as Colonel Sanders and Henri Matisse – in his new book Roctogenarians – older people who even in their 90s have achieved great things.


Mo Rocca: Late Comebacks

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include author Roger Rosenblatt, word maven Anne Curzan, and TV and radio personality Mo Rocca.


Clear+Vivid with Alan Alda - Season 26 trailer

Most creatures play– even octopuses, pigs, crows and bees. But play is much more than fun and games. Play teaches life skills and empathy – even morality. And it may help shape evolution. Want to play?


David Toomey: Want to play?

An astrophysicist brings the universe down to earth. In brief captivating videos she tells the stories of how everything our world is made of – including ourselves – was created in cataclysmic explosions and collisions far out in space.


Sanjana Curtis: Sprinkling Stardust on TikTok

When we experience things that seem beyond explanation, are they evidence of the supernatural? Or instead, a quirk of our brains? A skeptical but open-minded psychologist has some entertaining answers. 


Chris French: Would you believe it?

Sharing her experiences of three space missions – including 159 days as the only woman on the 6-person crew of the International Space Station – Cady Coleman also shares lessons about getting along:valuable insights for the rest of us down here on earth.


Cady Coleman: Sharing Space

Alan and the author of a new book called Supercommunicators share their thoughts on what makes a great conversation.  The result? A great conversation!


Charles Duhigg: Connecting and Communicating

The world of the very small is very different from the one we are familiar with. (Gold for instance turns red.) Chad Mirkin and Robert Langer’s skills in crafting this bizarre micro-world into medical breakthroughs earned them the 2024 Kavli Prize in nanotechnology.


When Small is Big News

He is searching space for planets that are something like ours. She is searching brains to discover how we recognize things. They are both 2024 Kavli laureates – Charbonneau awarded the prize for astrophysics, Tsao for neuroscience.


David Charbonneau and Doris Tsao: Looking for Something Familiar

That was the question two determined astronomers set out to answer. A frustrating five-year search revealed that Pluto, long thought to be a small, lonely planet on the outer fringes of the solar system, is in fact part of a huge ring of debris left over from the solar system’s birth.


David Jewitt and Jane Luu: Is Pluto All Alone Out There?

Between them these two neuroscientists changed the way we think of our brains. Their insights are now opening new ways to tackle the problems our brains face as they age, including neurodegenerative diseases such as Alzheimer’s. 


Carla Shatz and Marcus Raichle: Brainwaves

Once sworn enemies in TV appearances and on social media, Fred Guttenberg and Joe Walsh got together privately and realized there is much that unites them. They are now on a tour of college campuses hoping to share their success in bridge-building with others divided by hate.


Fred Guttenberg and Joe Walsh: Two Dads Defending Democracy

Aboard his 100 ft sailboat, the geneticist famed for his work deciphering human genes spent 15 years sailing the world’s oceans, discovering millions of unknown genes in the microbes that live there – genes that could lead to new sources of energy, food and medicine.


Craig Venter: Oceans of Genes

After a successful career as an award-winning magazine editor, Adam Moss decided to put it all aside to pursue a passion for painting. He became pretty good; but something was missing. His struggle to understand what that something was led him to his new book, The Work of Art.


Adam Moss: What Makes it Art?

Should we be planning to establish settlements on the moon and Mars? To many, including a couple of billionaires, the idea has become almost an obsession. An unlikely husband and wife duo has spent years digging deeply into plans to colonize space. Their conclusion: not so fast. 


Kelly and Zach Weinersmith: A Second Home on Mars?

We exist because of the moon. Rebecca Boyle relates the amazing story of how the moon, born of a cataclysmic collision with an infant earth, has shaped our history, our evolution, and even our very existence.


Rebecca Boyle: Moonstruck

Her new book tracks the momentous events of the 1960s when her husband, Dick Goodwin, worked closely with both JFK and LBJ, and Doris worked with LBJ, as the two very different presidents shaped the future.


Doris Kearns Goodwin: In the Rooms Where it Happened

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include newspaper editor Adam Moss; science journalist Rebecca Boyle; and writers Kelly and Zach Weinersmith.


Clear+Vivid with Alan Alda - Season 25 trailer

Stephen Dubner, host of Freakonomics Radio, has long been fascinated by the great physicist Richard Feynman. As has Alan. Stephen has devoted a year to making a remarkable podcast series on Feynman, and Alan has played Feynman on the stage for a year. They compare notes on what they’ve come to learn about him.


Stephen Dubner: Feynman on Our Mind

In this special episode of Clear and Vivid we reflect on Frans’ life-long commitment to revealing how much we humans have in common with our primate cousins.


Remembering Frans de Waal

When interpreting the Constitution, the dangers of relying solely on the words and what they meant at the time, without taking into account the purpose and values expressed in those words.


Justice Stephen Breyer: Understanding What They Meant

A leading physicist herself, Shohini Ghose has wonderful stories about the trials and triumphs of the many mostly unsung women whose work helped open up the universe.


Shohini Ghose: Women’s Time and Space

We can get used to things to the point where even something we once thought wonderful can lose its luster. More sinister, we can also get used to the drip, drip of falsehoods till we become dulled to their danger. How to overcome habituation, and even take advantage of it.


Tali Sharot: Take Another Look

The intriguing stories behind the often weird and baffling origins of punctuation and other symbols we use to communicate. And it’s not just commas, colons and periods. There are pilcrows, octothorps, interrobangs and a whole menagerie more.


Keith Houston: There’s More to Writing Than Words.

The Irondale Ensemble Project, a theater company rooted in improvisation, created a program to help police and community build trust and mutual understanding through theater games.


Terry Greiss: Acting to Connect

You may think you were free to choose that chocolate ice cream over the vanilla. But maybe the choice was made for you before you were even born – that the free will you believe you are exercising in your everyday decisions is an illusion.


Robert Sapolsky: You Have No Choice

And what a book it is, a rich sprawling novel called The Making of Another Major Motion Picture Masterpiece, which Tom himself describes as a “primer on the long slog of bringing an idea from somebody’s head to a theater near you.”


Tom Hanks: Making a Book About Making a Movie

Why can’t AI bots be made to be good, to be moral, so they’ll help us and not do harmful or terrible things? But just whose moral values would we want them to have? And what if they become too moral?


Paul Bloom: Can AI be Moral?

He was for many years the CEO of Google where he had a bird’s eye view of the dramatic evolution of artificial intelligence. And while he is alarmed by the many dangers of AI, especially its ability to create fake people in this election year, he is also enthusiastic about the huge opportunities he sees for AI benefitting medicine, education and the tackling of global problems like climate change.


Eric Schmidt: AI: The Good, the Bad and the Scary.

She earned that unofficial title from her peers through her pioneering work harvesting big data to power AI, leading to the recent breakthroughs such as ChatGPT and its many successors. Her personal story is inspiring, from her childhood in China to risking her scientific career on a research gamble that might well have failed. And like a real godmother she now feels responsible for the revolution she helped launch.


Fei-Fei Li: The Godmother of AI

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include computer scientist Fei-Fei Li; former CEO of Google Eric Schmidt; and actor Tom Hanks.


Clear+Vivid with Alan Alda - Season 24 trailer

Their social, communicative and emotional skills allow her robots to seamlessly collaborate with us. A pioneer in the field of social robotics, Cynthia Breazeal is now turning her focus to ensuring we understand the limits and risks of the artificial intelligence that powers those robots – that we become “AI literate.”


Cynthia Breazeal: Her Robots Have Warmth!

An unquenchable passion for astronomy born from gazing at the stars from a rooftop as a child led to his setting up a nationwide program in astronomy in Afghanistan. Escaping the wrath of the Taliban for the sin of teaching young women about the universe, he is now a graduate student at UCLA.


Abraham Amiri: From Afghanistan to the Stars

A new book takes a fresh look at Abraham Lincoln’s life by recounting sixteen face-to-face encounters Lincoln had with people who differed with him, sometimes vehemently. The book not only reveals his skills as a master politician in a deeply divisive time, but also has lessons for today.


Steve Inskeep: Lessons from Lincoln

A Tony winner for his performance as Aaron Burr in Hamilton, he is now starring on Broadway in the hit play Purlie Victorious. One of the secrets to his success: letting go.


Leslie Odom Jr: Bursting Out

It took her years to admit to family and friends that she was a non-believer.  But she found that pretending to believe wasn’t working. Her book is“We of Little Faith: Why I Stopped Pretending to Believe, And Maybe You Should Too."  


Kate Cohen: Asks if You Need God to be Good

In his new book, the doctor familiar on TV in his white coat and bow tie tells how his attempts to correct lies about covid vaccines led to death threats; while the lies themselves led to some 200,000 unnecessary deaths among  those refusing vaccination.


Peter Hotez: The Deadly Rise of Anti-Science

Two million of us get a letter in our inboxes every morning with a calm, clarifying take on what happened yesterday— from the perspective of a historian, yet written with the intimacy of a friend.


Heather Cox Richardson: She’ll Write You a Letter

Columnist and author David Brooks tells how he’s changed over his 60 something years –  in part through the books he’s written exploring how people see themselves and others. He shares the insights he’s gained into truly knowing the people around us.


David Brooks: How to Know a Person

Enjoy playing games? You’ll enjoy them even more once renowned mathematician, Oxford University professor and avid game player Marcus du Sautoy tells Alan why they so fascinate us. And Alan tells Marcus about his favorite game – one even Marcus didn’t know.


Marcus du Sautoy: Around the World in 80 Games

Stephanie Land’s lifelong passion for writing – along with a college degree she could ill afford – led to a bestselling book and a hit TV series, allowing her to escape the poverty trap ensnaring so many single mothers. 


How "Maid" Was Made

Not only does he have an astonishing memory himself, but Frank Felberbaum has taught thousands of others, including Alan, how to improve their memory skills – especially for putting names to faces.


Frank Felberbaum: Don’t Forget!

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include astronomer Abraham Amiri; memory expert Frank Felberbaum; and actor Leslie Odom Jr.


Clear+Vivid with Alan Alda - Season 23 trailer

The acclaimed biographer spent two years in Musk’s company as his subject launched rockets, built electric cars, decided to save humanity by sending us to Mars, became the richest man in the world and bought Twitter – all the while often behaving like an “absolute jerk.”


Walter Isaacson: Shadowing Elon Musk

A life full of adventure while struggling with grief led her to what she does so effectively today – helping doctors to level with colleagues and patients through storytelling when things go wrong.


Laurel Braitman: Writing Wrongs

Carl tells how rescuing a baby owl helped him and his wife get through the Covid lockdown – and how it renewed their bond with nature. There’s wisdom in it for the rest of us, too, whose relationship with the natural world is increasingly frayed.


Carl Safina: Wisdom from a Baby Owl

He’s fascinated by how culture has shaped our evolution – not only changing our bodies and expanding our brains but even expanding our ability to cooperate. And the more diverse a culture, the better its ability to innovate.


Joe Henrich: How Culture Has Shaped Our Bodies and Brains

That’s the title of a new book by New York Times technology reporter Kashmir Hill. Her book is both deeply researched and downright scary, as spelled out in the book’s subtitle: A Secretive Start-Up’s Quest to End Privacy As We Know it. A glimpse of your face in any photo you’ve ever uploaded can now lead to anyone discovering details of your life – both on-line and out there in the world.


Kashmir Hill: Your Face Belongs to Us

Author of a best-selling book called Why We Sleep, and host of the Matt Walker Podcast, he’s become the go-to expert on everything to do with sleep, from how it keeps both mind and body healthy to why we dream.


Matthew Walker: Sleep REALLY Matters

A brilliant violinist in her teens, her world came crashing down when an injury ended her career even as it was beginning. Remarkably, she turned that loss into a PhD in neuroscience, a stint in the White House and a popular podcast about others also navigating drastic changes in their lives.


Maya Shankar: Beginning from an Ending

Do you believe people are worse now than they use to be? That smarter people are happier people? That you know when to quit a conversation? Wrong on all counts, according to Adam Mastroianni, a social psychologist. He’s also a professional improv performer and uses those skills teaching business school students.


Adam Mastroianni: Why You So Often Get It Wrong

Nancy Kanwisher has discovered many areas of the brain that are specialized for one particular purpose— like recognizing faces – which is interesting to Alan because of his inability to remember the faces of people he meets. Other specialized areas include identifying food, which Alan so far has no trouble with.


Nancy Kanwisher: Your Brain is a Swiss Army Knife

She managed to write a lyrical, moving book about her journey to a massive glacier in Antarctica that, if it collapses into the ocean, would cause a catastrophic rise in sea level. Unexpectedly, it’s also a book about her difficulty in choosing motherhood in a time of radical climate change.


Elizabeth Rush: Journey to the Doomsday Glacier

The actor/writer/comedian has been an inspiration to comedians like Jay Leno and Jerry Seinfeld. And he’s been inspired himself by greats of the past in the exacting art of finding what’s funny in our daily lives – when observed from just the right angle.


Robert Klein: He Observes, We Laugh

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include comedian Robert Klein; writer Elizabeth Rush; and neuroscientist Nancy Kanwisher.


Clear+Vivid with Alan Alda - Season 22 trailer

Counterfeit people, the seductively appealing Deep Fakes made possible by AI, are just the beginning of what the distinguished philosopher Dan Dennett says is a threat to humanity. This spring, he joined hundreds of other thought leaders in signing a starkly scary statement: AI threatens to make us extinct.


Dan Dennett: Fake People Aren’t Funny

Most of us don’t know most things. Yet most of us also think we understand a lot (OK, not quantum mechanics or Federal Reserve policy). We are all living with what Sloman and Fernbach argue is an Illusionof how much we know: a knowledge illusion. And this is fueling the fracturing of society.


Steve Sloman and Phil Fernbach: How Do You Know That?

Torn between astronomy and acting, she has landed in the sweet spot: leader of a research team judging other planets for their hospitality for life, while using the skills she learned as an actor to connect with and encourage a new generation of girls to become – as she was – entranced by the stars.


Aomawa Shields: When an Actor is Starstruck

A physicist whose world has no room for spirits, but who has experienced many eerily transcendent moments – both in nature and in his work – sets out to understand the unexplainable.


Alan Lightman: Can Science Explain Spirituality?

A member of the US House of Representatives for 16 years before retiring – unindicted and undefeated as he likes to say – Steve Israel knows the value of good communication, and the cost to us all when it’s missing.


Steve Israel: Disagreeing Without the Hate

Every atom in your body – and there are more than all the grains of sand in the world­ – came from outer space, many of them created moments after the Big Bang that began it all. Dan Levitt tells the stories of the remarkable people who figured out how all those atoms got into you.


Dan Levitt: You Are Stardust. Really

The New Yorker essayist explores the mystery of mastery as he tackles skills he believed he could never learn. Including boxing, figure drawing and – in his 50s – driving.


Adam Gopnik: The Joy of Getting Good at Something Hard

Of all the attributes that make us humans unique – or in archeologist Brenna Hassett’s view, weird – the weirdest of all is our extraordinarily long childhood. In her delightful book, Growing Up Human, she explores the many tricks evolution has invented to lengthen our childhoods, including her favorite: Grandmas.


Brenna Hassett: Why We Are Weird

When funding for the James Webb Space Telescope was in doubt, cosmologist Michael Turner argued passionately that it would transform our understanding of the origin and fate of our universe. Today, with the spectacular images being taken by the Webb exceeding even its designers’ dreams, Turner is “awed and ecstatic.”


Michael Turner: The Dazzling Cosmos

The prizewinning architect has designed some of the world’s most dramatic, daring, and memorable buildings. Inspired by optimism, wonder, music, and light they challenge their visitors to experience them as a story.


Daniel Libeskind: His buildings speak for themselves

With the national state of emergency for Covid-19 now officially over, we invited physician and author Topol to reflect on his experience writing a regular online newsletter attempting to counter the misinformation flooding the internet. Called Ground Truths, it takes an unsparing dive into what went right and what went wrong over the last three years.


Eric Topol: A Covid Reckoning

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include architect Daniel Libeskind; bioarchaeologist Brenna Hassett; and a return visit from congressman Michael Turner.


Clear + Vivid with Alan Alda - Season 21 trailer

Chief medical officer of the National Alliance on Mental Illness, Dr Duckworth has written a guide for those with mental health problems that along with advice from experts tells of the lessons to be learned from people and families who are themselves struggling to live with mental illness.


Ken Duckworth: Navigating mental illness

Decades spent studying the way we use our hands when we talk has convinced Susan Goldin-Meadow that not only do gestures help our listeners understand us; gestures help us understand ourselves. They help us think, and as children, even to learn.


Susan Goldin-Meadow: Thinking with your hands

Annoyed by all those likes and so’s and you knows, not mention ahs and ums? In her delightfully titled book Like, Literally, Dude, Valerie Fridland argues that we should stop grumping about language tics and recognize that they are inevitable – and actually useful.


Valerie Fridland: English evolves, like it or not

Starting in the late 19th century, a group of women at the Harvard Observatory pored over hundreds of thousands of glass photographic plates bearing images of billions of stars. It was the beginning of a revolution in understanding what stars are made of and how far away they are.


Dava Sobel: The Women Who Brought the Stars to Earth

For decades now, he’s been building a comedy empire as writer, director and producer of a string of movies and TV series. Judd Apatow explores his early experiences soaking up the comedy writing of others and how he came to understand that the richest kind of humor is personal.


Judd Apatow: Funny, With a Side of Feeling

Life is hard. But drawing on the insights of philosophers ancient and modern, Keiran Setiya has written a witty and hope-filled book chronicling his own realization that, even with chronic pain, while his life may not be perfect, it can still be richly rewarding.


Kieran Setiya: Facing up to Life

Her new book takes a deep dive into neurotechnology – the ability to read and record your brain waves. While there are many potential benefits – Nita herself uses a simple device to help control her migraines – she is alarmed at the prospect of others, be they employers or governments, being able to peer into your mind.


Nita Farahany: The Battle For Your Brain

Inspired by his Ukrainian grandfather, Liev has launched a campaign to fund humanitarian relief for the people of Ukraine. His several trips there included a meeting with a fellow actor, now president, Volodymyr Zelensky.


Liev Schreiber: The Ukrainian Connection

Mike Farrell makes a guest appearance to perform with Alan the first new MASH scene in 40 years – a scene written by a chatbot. Most of Alan’s other guests are themselves chatbots, including one that falsely claims to be a person and another that insults him horribly when Alan seeks advice.


Alan chats with the bots

Alan is a little obsessed with chatbots, and he’s become only too aware that these products of artificial intelligence can become seriously – even dangerously – stupid. What’s urgently needed, argues tech guru Kevin Kelly, are people with a particular talent – the ability to coax chatbots into being useful – AI whisperers.


Kevin Kelly: Help Wanted  – AI Whisperers

Her almost uncanny ability to connect with creatures from rhinos to octopuses led her to a love affair with one of the planet's swiftest and fiercest predators. Meanwhile Sy Montgomery has been in a nurturing relationship with a collection of creatures who are the hawks’ polar opposites – turtles. 


Sy Montgomery: For the love of hawks… and turtles

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include naturalist Sy Montgomery; comedian Judd Apatow; and founding executive editor of Wired magazine, Kevin Kelly.


Clear+Vivid with Alan Alda - Season 20 trailer

A childhood illness robbed her of a leg, but that hasn’t stopped her from trekking through jungles, swamps and mountains in search of medicinal plants. Her hope: that her discoveries may lead to new medications to counter the rising threat of antibiotic-resistant superbugs.


Cassandra Quave: Hunting Plants That Heal

Pioneering a new way to search for signs of life on planets circling other suns, Sara Seager battled through a devastating personal loss to see her method vindicated by NASA’s powerful new space telescope.


Sara Seager: Is There Life Out There?

She wrote, produced, directed and starred in the hit series “Better Things” for five years. Nominated multiple times for multiple awards, she recently directed her first movie. She trades reminiscences with Alan, who’s known her since she was a kid.


Pamela Adlon: Getting Better All the Time

Her new book lets us eavesdrop on the chatter between creatures – even plants – that our ears can’t detect. And reveals how new technologies, including AI, are opening the possibility of our being able to converse with other animals.


Karen Bakker: The Sounds of Life

The founder of the multi-billion-dollar nutrition bar company KIND has rolled out "Starts With Us," a non-partisan movement working to overcome cultural extremism by fostering curiosity, compassion and courage as daily habits.


Daniel Lubetzky: On a Mission to Spread Kindness

Built during WWII, the world’s first electronic computer, the ENIAC, was an engineering marvel. But at 80 ft long and 6 ft tall it was mute until it was brought to life by six young women mathematicians who figured out how to program it.


Kathy Kleiman: The six women who programmed the first modern computer

You need a microscope to see them, but tardigrades aren’t only nature’s ultimate survivors – they hold secrets that may make vaccines more available and help astronauts live in space.


Thomas Boothby: On a Tough Little Guy With Secrets

The renowned expert on how babies learn about the world through curiosity and exploration is now collaborating with artificial intelligence researchers to make AI systems smarter by being more like children.


Alison Gopnik: Making AI more childlike

The NASA engineer piggybacked a tiny spacecraft on the giant new moon rocket launched just last month. His spacecraft was to spread gossamer wings and sail to an asteroid. But Les Johnson’s dreams are of sailing people to the stars.


Les Johnson: Sailing to the Stars

Kate watched up close as Facebook struggled to moderate its content. And that makes her the perfect guest to unravel the chaos surrounding Elon Musk’s takeover of Twitter.


Kate Klonick: Can Social Media Not Be So Anti-Social?

The dynamic couple is writing, producing and acting in hit movies and TV series all while being the parents of two daughters. Alan wonders if this requires special communication skills!


Melissa McCarthy and Ben Falcone: Married – and loving it.

Alan and Executive Producer Graham Chedd chat about and play excerpts from Alan's conversations with some of the guests in the new season, beginning next week. Guests include actors Melissa McCarthy and Ben Falcone; programmer and leader in internet law Kathy Kleiman; and NASA technologist Les Johnson.


Clear+Vivid with Alan Alda - Season 19 trailer

In her riveting memoir, A Portrait of the Scientist as a Young Woman, Lindy Elkins-Tanton writes of the unconventional path she has taken to becoming the leader of a deep space mission that may reveal secrets of a place we can never visit – the core of our own planet.


Lindy Elkins-Tanton: What’s at the Core?

Too many of us instinctively feel that a quarter pound hamburger is bigger than a third of a pound. And that’s just one of the mistakes we make in too quickly sizing up situations — sometimes jumping to disastrous conclusions. 


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