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👁How did feathers evolve? - Carl Zimmer

🗣Subtitle: Farsi | English
👣To look at the evolution of modern bird feathers, we must start a long time ago, with the dinosaurs from whence they came. We see early incarnations of feathers on dinosaur fossils, and remnants of dinosaurs in a bird's wish bone. Carl Zimmer explores the stages of evolution and how even the reasons for feathers have evolved over millions of years.
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👁Could your brain repair itself? - Ralitsa Petrova

🗣Subtitle: Farsi | English | Turkish
👣Imagine the brain could reboot, updating its damaged cells with new, improved units. That may sound like science fiction — but it’s a potential reality scientists are investigating right now. Ralitsa Petrova details the science behind neurogenesis and explains how we might harness it to reverse diseases like Alzheimer’s and Parkinson’s.
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👁The neuroscience of imagination - Andrey Vyshedskiy

🗣Subtitle: Farsi | English | Turkish
👣Imagine, for a second, a duck teaching a French class. A ping-pong match in orbit around a black hole. A dolphin balancing a pineapple. You probably haven’t actually seen any of these things. But you could imagine them instantly. How does your brain produce an image of something you’ve never seen? Andrey Vyshedskiy details the neuroscience of imagination.
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👁Let's protect the oceans like national parks
🗣Subtitle: Farsi | English | Turkish

👣You don't have to be a scientist to help protect the world's oceans, says underwater drone expert and TED Fellow David Lang -- in fact, ordinary citizens have pulled together to save the planet's natural treasures many times in history. Lang asks us to take a lesson from the story of the US National Parks Service, offering a three-point plan for conserving underwater wonders.
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#TEDxBerkeley #oceans #TEDx #TED_Fellows #technology #science #marine_biology #global_commons #fish #collaboration #nature #future

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👁What causes economic bubbles? - Prateek Singh

🗣Subtitle: Farsi | English | Turkish
👣During the 1600’s, the exotic tulip became a nationwide sensation; some single bulbs even sold for ten times the yearly salary of a skilled craftsman. Suddenly, though, the demand completely plummeted, leaving the tulip market in a depression. What happened? Prateek Singh explains the peak of a business cycle, commonly referred to as a mania.
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👁Why should you read Don Quixote ? - Ilan Stavans

🗣Subtitle: Farsi | English | Turkish
👣Lesson by Ilan Stavans, directed by Avi Ofer.
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👁What it was like to grow up under China's one-child policy
🗣Subtitle: Farsi | English | Turkish

👣China's one-child policy ended in 2015, but we're just beginning to understand what it was like to live under the program, says TED Fellow and documentary filmmaker Nanfu Wang. With footage from her film \"One Child Nation,\" she shares untold stories that reveal the policy's complex consequences and expose the creeping power of propaganda.
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👁Where do genes come from? - Carl Zimmer

🗣Subtitle: Farsi | English | Turkish
👣
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👁The mysterious science of pain - Joshua W. Pate

🗣Subtitle: Farsi | English | Turkish
👣In 1995, the British Medical Journal published a report about a builder who accidentally jumped onto a nail, which pierced straight through his steel-toed boot. He was in such agonizing pain that any movement was unbearable. But when the doctors took off his boot, they discovered that the nail had never touched his foot at all. What’s going on? Joshua W. Pate investigates the experience of pain.
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👁3 clues to understanding your brain
🗣Subtitle: Farsi | English | Turkish

👣Vilayanur Ramachandran tells us what brain damage can reveal about the connection between celebral tissue and the mind, using three startling delusions as examples.
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👁Can you find the next number in this sequence? - Alex Gendler

🗣Subtitle: Farsi | English | Turkish
👣1, 11, 21, 1211, 111221. These are the first five elements of a number sequence. Can you figure out what comes next? Alex Gendler reveals the answer and explains how beyond just being a neat puzzle, this type of sequence has practical applications as well.
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👁The science of symmetry

🗣Subtitle: Farsi | English | Turkish
👣
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👁How policewomen make communities safer
🗣Subtitle: Farsi | English | Turkish

👣Less than 13 percent of police officers in the United States are women -- despite their proven effectiveness in diffusing violent situations and reducing the use of force. Drawing on more than two decades of experience as a police officer and chief, TED Fellow Ivonne Roman shares how a simple change to police academy physical fitness tests could help build a more balanced force that benefits communities and officers alike.
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#TED2019 #social_change #criminal_justice #women #justice_system #gender_equality #work #feminism #United_States #diversity #TED_Fellows

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👁You may be accidentally investing in cigarette companies
🗣Subtitle: Farsi | English | Turkish

👣Tobacco causes more than seven million deaths every year -- and many of us are far more complicit in the problem than we realize. In a bold talk, oncologist Dr. Bronwyn King tells the story of how she uncovered the deep ties between the tobacco industry and the entire global finance sector, which invests our money in cigarette companies through big banks, insurers and pension funds. Learn how Dr. King has ignited a worldwide movement to create tobacco-free investments and how each of us can play a role in ending this epidemic.
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#TEDxSydney #health #finance #investment #global_issues #cancer #economics #money #health_care #public_health #social_change #TEDx

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👁183rd Knowledge Seekers Workshop - Declaration of World Peace - Day 2 - Thursday, Aug 3, 2017

🗣Subtitle: Farsi | English
👣
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👁How do crystals work? - Graham Baird

🗣Subtitle: Farsi | English | Turkish
👣Many crystals have signature shapes— like the cascade of pointed quartz or a pile of galena cubes. Every crystal's atoms have a defining feature: their organized, repeating pattern. The pattern isn't restricted to minerals- sand, ice, metals and DNA also have crystalline structures. So what causes them to grow into these shapes again and again? Graham Baird dives into the unique properties of crystals.
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👁Why we get mad -- and why it's healthy
🗣Subtitle: Farsi | English

👣Anger researcher Ryan Martin draws from a career studying what makes people mad to explain some of the cognitive processes behind anger -- and why a healthy dose of it can actually be useful. \"Your anger exists in you ... because it offered your ancestors, both human and nonhuman, an evolutionary advantage,\" he says. \"[It's] a powerful and healthy force in your life.\"
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👁How do we separate the seemingly inseparable? - Iddo Magen

🗣Subtitle: Farsi | English
👣Your cell phone is mainly made of plastics and metals. It’s easy to appreciate the process by which those elements add up to something so useful. But there’s another story we don’t hear about -- how did we get our raw ingredients in the first place, from the chaotic tangle of materials that is nature? Iddo Magen uncovers the answer in a group of clever hacks known as separation techniques.
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👁How do schools of fish swim in harmony? - Nathan S. Jacobs

🗣Subtitle: Farsi | English
👣How do schools of fish swim in harmony? How do the tiny cells in your brain give rise to the complex thoughts, memories, and consciousness that are you? Oddly enough, those questions have the same general answer. Nathan S. Jacobs explains the concept of emergence, the spontaneous creation of sophisticated behaviors and functions from large groups of simple elements.
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👁How we read each other's minds
🗣Subtitle: Farsi | English | Turkish

👣Sensing the motives and feelings of others is a natural talent for humans. But how do we do it? Here, Rebecca Saxe shares fascinating lab work that uncovers how the brain thinks about other peoples' thoughts -- and judges their actions.
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#TEDGlobal_2009 #brain #morality #science #technology

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