Moments of total, world-shaking bliss are not easy to come by. Maybe that's what makes them feel so life-altering when they strike. And so worth chasing. This hour: stories of striving, grasping, tripping, and falling for happiness, perfection, and ideals.

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In this short, costumed scientists create a carefully choreographed childhood for a flock of whooping cranes to save them from extinction. It's the ultimate feel-good story, but it also raises some troubling questions about what it takes to get a species back to being wild.

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Once a kid is born, their genetic fate is pretty much sealed. Or is it? This hour, we put nature and nurture on a collision course and discover how outside forces can find a way inside us, shaping not just our hearts and minds, but the basic biological blueprint that we pass on to future generations.

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Mel Blanc was known as "the man of 1,000 voices," but the actual number may have been closer to 1,500. Bugs Bunny, Porky Pig, Tweety, Barney Rubble -- all Mel. His characters made him one of the most beloved men in America. And in 1961, when a car crash left him in a coma, these characters may have saved him.

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John and Zoltan are both blind, but they deal with the world in completely different ways -- one paints vivid pictures in his mind, while the other refuses to picture anything at all. In this short, they argue about the truth of a world they can't see.

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200 miles above Earth's surface, astronaut Dave Wolf -- rocketing through the blackness of Earth's shadow at 5 miles a second -- floated out of the Mir Space Station on his very first spacewalk. In this short, he describes the extremes of light and dark in space, relives a heart-pounding close call, and shares one of the most tranquil moments of his life.

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Getting a firm hold on the truth is never as simple as nailing down the facts of a situation. This hour, we go after a series of seemingly simple facts -- facts that offer surprising insight, facts that inspire deeply different stories, and facts that, in the end, might not matter at all.

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"Hey kids," said physicist Tadashi Tokieda, "Wanna see a magic trick?" He pulled out a Slinky and did something that amazed the kids, & their dad Steve Strogatz. Steve, along with Neil deGrasse Tyson, explains what the gravity-defying Slinky trick reveals about the nature of all things great and small (including us).

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Pain is a fundamental part of life, and often a very lonely part. Doctors want to understand their patients' pain, and we all want to understand the suffering of our friends, relatives, or spouses. But pinning down another person's hurt is a slippery business. 

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Celebrate the 35th anniversary of the launch of Voyager 2 (it rocketed off Earth on 8/20/77 carrying a copy of the Golden Record), and tip your hat to the Mars rover Curiosity as it kicks off its third week on the red planet, with a rebroadcast of one our favorite episodes: Space.

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From a suburban sidewalk in southern California, Jad and Robert witness the carnage of a gruesome turf war. Though the tiny warriors doing battle clock in at just a fraction of an inch, they have evolved a surprising, successful, and rather unsettling strategy of ironclad loyalty, absolute intolerance, and brutal violence.

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In early August of 1945, Tsutomu Yamaguchi had a run of the worst luck imaginable. A double blast of radiation left his future, and the future of his descendants, in doubt. In this short: an utterly amazing survival story that spans ... well, 4 billion years when you get down to it.

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Turning ideas into radio is one of the most exciting, frustrating, rewarding, and insanely fun things there is. Which got us thinking--why not ask you to join in on the fun? So we teamed up with Indaba for our first-ever remix competition. And now we get to play the winners.

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While working on The Bad Show, producer Pat Walters ran across some recordings that spooked him--partly because they seemed like they had to be a big joke ... and partly because, at the same time, they sounded so deadly serious. In this short, Jad & Robert try to decide how to feel.

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Our world is saturated in color, from soft hues to violent stains. How does something so intangible pack such a visceral punch? This hour, in the name of science and poetry, Jad and Robert tear the rainbow to pieces.

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Just before the curtain went up on our live show in Los Angeles, Jad and Robert carved out a little stage time for a sneak peek at next week's Colors episode.

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Mother's day is nigh. Sort of. Anyway, without knowing it, you might have already given your mom a pretty lasting gift. But whether it helps or hurts her, or both, is still an open question. In this Radiolab short, Robert updates us on the science of fetal cells -- one of the first topics he covered as an NPR science correspondent.

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In this short, we go looking for the devil, and find ourselves tangled in a web of details surrounding one of the most haunting figures in music--a legendary guitarist whose shadowy life spawned a legend so powerful, it's still being repeated...even by fans who don't believe a word of it.

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This hour, we dive into the messy mystery in the middle of us. What's going on down there? And what can the rumblings deep in our bellies tell us about ourselves?

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100 years ago this year, the man who first conceived of the computer age was born. His name was Alan Turing. He was also a math genius, a hero of World War II and he is widely considered to be the father of artificial intelligence. But the world wasn't kind to Alan Turing. In 1952, he was arrested and convicted under a British law that prohibited "acts of gross indecency between men, in public or private."

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Every day, every moment, an epic battle is raging across the globe. It's happening in the ocean. And the evidence is both highly visible and totally hidden, depending on your perspective. In this short, the tale of an arms race involving trillions of sea creatures--and why their struggle is vital to our survival.

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The walls are closing in, you've got no way out... and then, suddenly, you escape! This hour, stories about traps, getaways, perpetual cycles, and staggering breakthroughs.

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Sometimes being a good scientist requires putting aside your emotions. But what happens when objectivity isn't enough to make sense of a seemingly senseless act of violence? In this short, Jad and Robert talk to an entomologist about the risks, and the rewards, of trying to see the world through someone else's eyes. 

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In today's short, a man confronts a bully, and frees himself from a recurring nightmare that's terrorized him for more than 20 years.

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Cruelty, violence, badness... This episode of Radiolab, we wrestle with the dark side of human nature, and ask whether it's something we can ever really understand, or fully escape.

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In this podcast short, a strange twist of legal taxonomy causes a dispute over whether X-MEN action figures are toys or dolls and sparks a court case about what it means to be human.

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Roman Mars loves to spotlight the seams and joints that make up the world around us. He's the host of an irresistible podcast called 99% Invisible--a series of tiny radio stories that provoke enormous questions. Roman joins Jad and Robert to play a few favorites, and to chat about the hidden language of design that shapes our lives--from sound effects to stuff that’s more ... concrete.

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Near the end of the 19th century, a mysterious young woman with a beguiling smile turned up in Paris. She became a huge sensation. She also happened to be dead. You'd probably recognize her face yourself. You might have even touched it.

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The greatest mysteries have a shadowy figure at the center—someone who sets things in motion and holds the key to how the story unfolds. In epidemiology, this central character is known as Patient Zero—the case at the heart of an outbreak. This hour, Radiolab hunts for Patient Zeroes from all over the map.

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Carl Zimmer is one of our go-to guys when we need help untangling a complicated scientific idea. But in this short, he unravels something much more personal.

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