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Michael Rubinstein: See invisible motion, hear silent sounds

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Meet the "motion microscope," a video-processing tool that plays up tiny changes in motion and color impossible to see with the naked eye. Video researcher Michael Rubinstein plays us clip after jaw-dropping clip showing how this tech can track an individual's pulse and heartbeat simply from a piece of footage.

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How we’re teaching computers to understand pictures

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When a very young child looks at a picture, she can identify simple elements: “cat,” “book,” “chair.” Now, computers are getting smart enough to do that too. What’s next? In a thrilling talk, computer vision expert Fei-Fei Li describes the state of the art -- including the database of 15 million photos her team built to “teach” a computer to understand pictures -- and the key insights yet to come.

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Iwan Baan: Ingenious homes in unexpected places

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In the center of Caracas, Venezuela, stands the 45-story "Tower of David," an unfinished, abandoned skyscraper. But about eight years ago, people started moving in. Photographer Iwan Baan shows how people build homes in unlikely places, touring us through the family apartments of Torre David, a city on the water in Nigeria, and an underground village in China.

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Camille Seaman: Haunting photos of polar ice

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Photographer Camille Seaman shoots icebergs, showing the world the complex beauty of these massive, ancient chunks of ice. Dive in to her photo slideshow, "The Last Iceberg."

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Julie Chang: Why we need to design cameras for robots

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In this eye-opening talk, computational imaging researcher Julie Chang discusses how we can customize AI-driven photo applications to improve their ability to perform tasks such as facial recognition.

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Monika Bulaj: The hidden light of Afghanistan

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Photographer Monika Bulaj shares powerful, intimate images of Afghanistan -- of home life, of ritual, of men and women. Behind the headlines, what does the world truly know about this place?

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Laura Boushnak: The deadly legacy of cluster bombs

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The destruction of war doesn't stop when the fighting is over. Photographer and TED Fellow Laura Boushnak shares a powerful photo essay about the survivors of cluster bombs, people who encountered these deadly submunitions years after the end of conflict. With her haunting photos, Boushnak asks those who still produce and condone the use of these weapons to abandon them.

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Erik Johansson creates realistic photos of impossible scenes -- capturing ideas, not moments. In this witty how-to, the Photoshop wizard describes the principles he uses to make these fantastical scenarios come to life, while keeping them visually plausible.

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Jonathan Klein: Photos that changed the world

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Photographs do more than document history -- they make it. At TED University, Jonathan Klein of Getty Images shows some of the most iconic, and talks about what happens when a generation sees an image so powerful it can't look away -- or back.

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Photographer Brian Skerry shoots life above and below the waves -- as he puts it, both the horror and the magic of the ocean. Sharing amazing, intimate shots of undersea creatures, he shows how powerful images can help make change.

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Thomas Peschak: Dive into an ocean photographer's world

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Somersaulting manta rays, dashing dolphins, swarming schools of fish and munching sharks inhabit a world beneath the ocean's surface that few get a chance to see. Conservation photographer Thomas Peschak visits incredible seascapes around the world, and his photos reveal these hidden ecosystems. "You can't love something and become a champion for it if you don't know it exists," he says.

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Anand Varma: The first 21 days of a bee's life

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We've heard that bees are disappearing. But what is making bee colonies so vulnerable? Photographer Anand Varma raised bees in his backyard - in front of a camera - to get an up close view.

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Karen Bass: Unseen footage, untamed nature

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At TED2012, filmmaker Karen Bass shares some of the astonishing nature footage she's shot for the BBC and National Geographic -- including brand-new, previously unseen footage of the tube-lipped nectar bat, who feeds in a rather unusual way ...

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Louie Schwartzberg: Nature. Beauty. Gratitude. | TED Talk

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Nature’s beauty can be fleeting -- but not through Louie Schwartzberg’s lens. His stunning time-lapse photography, accompanied by powerful words from Benedictine monk Brother David Steindl-Rast, serves as a meditation on being grateful for every day.

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Louie Schwartzberg: Hidden miracles of the natural world

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We live in a world of unseeable beauty, so subtle and delicate that it is imperceptible to the human eye. To bring this invisible world to light, filmmaker Louie Schwartzberg bends the boundaries of time and space with high-speed cameras, time lapses and microscopes.

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Can a person disappear in plain sight? That's the question Liu Bolin's remarkable work seems to ask. The Beijing-based artist is sometimes called "The Invisible Man" because in nearly all his art, Bolin is front and center - and completely unseen. He aims to draw attention to social and political issues by dissolving into the background.

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Rachel Sussman: The world's oldest living things

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Rachel Sussman shows photographs of the world's oldest continuously living organisms -- from 2,000-year-old brain coral off Tobago's coast to an "underground forest" in South Africa that has lived since before the dawn of agriculture.

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Thomas Peschak: Dive into an ocean photographer's world

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Somersaulting manta rays, dashing dolphins, swarming schools of fish and munching sharks inhabit a world beneath the ocean's surface that few get a chance to see. Conservation photographer Thomas Peschak visits incredible seascapes around the world, and his photos reveal these hidden ecosystems. "You can't love something and become a champion for it if you don't know it exists," he says.

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Cameron Russell: Looks aren't everything. Believe me, I'm a model.

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Cameron Russell admits she won "a genetic lottery": she's tall, pretty and an underwear model. But don't judge her by her looks. In this fearless talk, she takes a wry look at the industry that had her looking highly seductive at barely 16 years old.

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Levon Biss: Mind-blowing, magnified portraits of insects

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Photographer Levon Biss was looking for a new, extraordinary subject when one afternoon he and his young son popped a ground beetle under a microscope and discovered the wondrous world of insects. Applying his knowledge of photography to subjects just five millimeters long, Biss created a process for shooting insects in unbelievable microscopic detail.

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Marko Kallaste - "The beauty of human skin in every color"

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Marko Kallaste - "The beauty of human skin in every color"

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Angélica Dass’s photography challenges how we think about skin color and ethnic identity. In this personal talk, hear about the inspiration behind her portrait project, Humanæ, and her pursuit to document humanity’s true colors rather than the untrue white, red, black and yellow associated with race.

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Chris Burkard: The joy of surfing in ice-cold water

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"Anything that is worth pursuing is going to require us to suffer, just a little bit," says surf photographer Chris Burkard, as he explains his obsession with the coldest, choppiest, most isolated beaches on earth. With jawdropping photos and stories of places few humans have ever seen - much less surfed - he draws us into his "personal crusade against the mundane."

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David Gruber: Glow-in-the-dark sharks and other stunning sea creatures

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Just a few meters below the waves, marine biologist and explorer-photographer David Gruber discovered something amazing -- a surprising new range of sea creatures that glow in many colors in the ocean's dim blue light. Join his journey in search of biofluorescent sharks, seahorses, sea turtles and more, and learn how these light-up creatures could illuminate a new understanding of our own brains.