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👁Why does ice float in water? - George Zaidan and Charles Morton

🗣Subtitle: Farsi | English
👣Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton explain the science behind how how hydrogen bonds keep the ice in your glass (and the polar ice caps) afloat.
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👁How does impeachment work? - Alex Gendler

🗣Subtitle: Farsi | English
👣View full lesson:https://ed.ted.com/lessons/how-does-impeachment-work-alex-gendler
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👁Why invest in Africa
🗣Subtitle: Farsi | English | Turkish

👣South African investment banker Euvin Naidoo explains why investing in Africa can make great business sense.
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#TEDGlobal_2007 #Africa #business #entrepreneur #global_issues #investment

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👁Why are human bodies asymmetrical? - Leo Q. Wan

🗣Subtitle: Farsi | English | Turkish
👣Symmetry is everywhere in nature. And we usually associate it with beauty: a perfectly shaped leaf or a butterfly with intricate patterns mirrored on each wing. But it turns out that asymmetry is pretty important, too — and more common than you might think. Leo Q. Wan takes us into the human body to show how biological asymmetry can be quite beautiful.
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👁Why should you read Virginia Woolf? - Iseult Gillespie

🗣Subtitle: Farsi | English | Turkish
👣View full lesson:https://ed.ted.com/lessons/why-should-you-read-virginia-woolf-iseult-gillespie
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👁An architect's subversive reimagining of the US-Mexico border wall
🗣Subtitle: Farsi | English

👣What is a border? It's a line on a map, a place where cultures mix and merge in beautiful, sometimes violent and occasionally ridiculous ways. And a border wall? An overly simplistic response to that complexity, says architect Ronald Rael. In a moving, visual talk, Rael reimagines the physical barrier that divides the United States and Mexico -- sharing satirical, serious works of art inspired by the borderlands and showing us the border we don't see in the news. \"There are not two sides defined by a wall. This is one landscape, divided,\" Rael says.
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#TED_Salon:_Belonging #immigration #politics #society #architecture #humanity #social_change #art #community #United_States

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👁Origami robots that reshape and transform themselves
🗣Subtitle: Farsi | English

👣Taking design cues from origami, robotician Jamie Paik and her team created \"robogamis\": folding robots made out super-thin materials that can reshape and transform themselves. In this talk and tech demo, Paik shows how robogamis could adapt to achieve a variety of tasks on earth (or in space) and demonstrates how they roll, jump, catapult like a slingshot and even pulse like a beating heart.
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#TED2019 #robots #future #design #science #demo #space #technology #innovation #engineering

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👁Why do people get so anxious about math? - Orly Rubinsten

🗣Subtitle: Farsi | English | Turkish
👣Have you ever sat down to take a math test and immediately felt your heart beat faster and your palms start to sweat? This is called math anxiety, and if it happens to you, you’re not alone: Researchers think about 20 percent of the population suffers from it. So what’s going on? And can it be fixed? Orly Rubinsten explores the current research and suggests ways to increase math performance.
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👁A 3-minute guide to the Bill of Rights - Belinda Stutzman

🗣Subtitle: Farsi | English | Turkish
👣Daily, Americans exercise their rights secured by the Constitution. The most widely discussed and debated part of the Constitution is known as the Bill of Rights. Belinda Stutzman provides a refresher course on exactly what the first ten amendments grant each and every American citizen.
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👁Grief and love in the animal kingdom
🗣Subtitle: Farsi | English

👣From mourning orcas to distressed elephants, biological anthropologist Barbara J. King has witnessed grief and love across the animal kingdom. In this eye-opening talk, she explains the evidence behind her belief that many animals experience complex emotions, and suggests ways all of us can treat them more ethically -- including every time we eat. \"Animals don't grieve exactly like we do, but this doesn't mean that their grief isn't real,\" she says. \"It is real, and it's searing, and we can see it if we choose.\"
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#TED2019 #emotions #animals #biology #empathy #evolution #science #biodiversity #psychology #mental_health #love

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👁Is your country at risk of becoming a dictatorship? Here's how to know
🗣Subtitle: Farsi | English | Turkish

👣Farida Nabourema has dedicated her life to fighting the military regime in Togo, Africa's oldest autocracy. She's learned two truths along the way: no country is destined to be oppressed -- and no country is immune to dictatorship. But how can you tell if you're at risk before it happens? In a stirring talk, Nabourema shares the four key signs of a dictatorship, along with the secret to defiance for those living within an oppressive system.
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#TEDWomen_2018 #activism #protests #social_change #democracy #Africa #politics #leadership #corruption #society

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👁Inside the minds of animals - Bryan B Rasmussen

🗣Subtitle: Farsi | English | Turkish
👣Do animals think? It’s a question that has intrigued scientists for thousands of years, inspiring them to come up with different methods and criteria to measure the intelligence of animals. Bryan B Rasmussen navigates through this controversial question, showing how determining intelligence often says more about how humans think than about anything else.
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👁How small are we in the scale of the universe? - Alex Hofeldt

🗣Subtitle: Farsi | English | Turkish
👣In 1995, scientists pointed the Hubble Telescope at an area of the sky near the Big Dipper. The location was apparently empty, and the whole endeavor was risky – what, if anything, was going to show up? But what came back was nothing short of spectacular: an image of over 1,500 galaxies glimmering in a tiny sliver of the universe. Alex Hofeldt helps us understand the scale of this image.
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👁Creative ways to get kids to thrive in school
🗣Subtitle: Farsi | English

👣To get young kids to thrive in school, we need to do more than teach them how to read and write -- we need to teach them how to manage their emotions, says educator Olympia Della Flora. In this practical talk, she shares creative tactics she used to help struggling, sometimes disruptive students -- things like stopping for brain breaks, singing songs and even doing yoga poses -- all with her existing budget and resources. \"Small changes make huge differences, and it's possible to start right now ... You simply need smarter ways to think about using what you have, where you have it,\" she says.
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#TED_Salon:_Education_Everywhere #children #education #parenting #teaching #emotions #creativity

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👁Why being respectful to your coworkers is good for business
🗣Subtitle: Farsi | English | Turkish

👣Looking to get ahead in your career? Start by being respectful to your coworkers, says leadership researcher Christine Porath. In this science-backed talk, she shares surprising insights about the costs of rudeness and shows how little acts of respect can boost your professional success -- and your company's bottom line.
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#TEDxUniversityofNevada #leadership #TEDx #work #business #science #productivity #personal_growth #motivation #psychology #success

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👁The threat of invasive species - Jennifer Klos

🗣Subtitle: Farsi | English | Turkish
👣Massive vines that blanket the southern United States, climbing high as they uproot trees and swallow buildings. A ravenous snake that is capable of devouring an alligator. Rabbit populations that eat themselves into starvation. These aren’t horror movie concepts – they’re real stories. But how could such situations exist in nature? Jennifer Klos gives the facts on invasive species.
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👁How to set the table - Anna Post

🗣Subtitle: Farsi | English | Turkish
👣Can't remember where your soup spoon ought to go? What about your salad fork? Knowing how to set a traditional table can seem like antiquated etiquette -- but it can come in handy! Anna Post, great-great-granddaughter of etiquette expert Emily Post, shows how to set a table with a plate full of tips and tricks to boot (even your grandmother will be impressed).
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👁The surprising connection between brain injuries and crime
🗣Subtitle: Farsi | English

👣Here's a shocking statistic: 50 to 80 percent of people in the criminal justice system in the US have had a traumatic brain injury. In the general public, that number is less than five percent. Neuropsychologist Kim Gorgens shares her research into the connection between brain trauma and the behaviors that keep people in the revolving door of criminal justice -- and some ways to make the system more effective and safer for everyone.
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#TEDxMileHigh #TEDx #prison #crime #justice_system #criminal_justice #brain #psychology #neuroscience #law #social_change #society

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👁The world's first crowdsourced space traffic monitoring system
🗣Subtitle: Farsi | English

👣\"Most of what we send into outer space never comes back,\" says astrodynamicist and TED Fellow Moriba Jah. In this forward-thinking talk, Jah describes the space highways orbiting earth and how they're mostly populated by space junk. Learn more about his quest to develop and scale the world's first crowdsourced space traffic monitoring system -- and how it could help solve the debris problem in near-earth space.
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#TED2019 #space #environment #exploration #communication #science #technology #TED_Fellows

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👁Why is this painting so captivating? - James Earle and Christina Bozsik

🗣Subtitle: Farsi | English | Turkish
👣
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