Could psychedelics help us heal from trauma and mental illnesses? Researcher Rick Doblin has spent the past three decades investigating this question, and the results are promising. In this fascinating dive into the science of psychedelics, he explains how drugs like LSD, psilocybin and MDMA affect your brain -- and shows how, when paired with p...

After a crisis, how can we tell if water is safe to drink? Current tests are slow and complex, and the delay can be deadly, as in the cholera outbreak after Haiti's earthquake in 2010. TED Fellow Sonaar Luthra previews his design for a simple tool that quickly tests water for safety -- the Water Canary.

The prevailing image of where refugees live is of temporary camps in isolated areas -- but in reality, nearly 60 percent of them worldwide end up in urban areas. TED Fellow Robert Hakiza takes us inside the lives of urban refugees -- and shows us how organizations like the one that he started can provide them with the skills they need to ultimat...

What is AI, really? Jeff Dean, the head of Google's AI efforts, explains the underlying technology that enables artificial intelligence to do all sorts of things, from understanding language to diagnosing disease -- and presents a roadmap for building better, more responsible systems that have a deeper understanding of the world. (Followed by a ...

As a child growing up in North Korea, Hyeonseo Lee thought her country was "the best on the planet." It wasn't until the famine of the 90s that she began to wonder. She escaped the country at 14, to begin a life in hiding, as a refugee in China. Hers is a harrowing, personal tale of survival and hope -- and a powerful reminder of those who face ...

What if you're in surgery and the power goes out? No lights, no oxygen -- and your anesthesia stops flowing. It happens constantly in hospitals throughout the world, turning routine procedures into tragedies. Erica Frenkel demos one solution: the universal anesthesia machine.

Four-star general Stanley McChrystal shares what he learned about leadership over his decades in the military. How can you build a sense of shared purpose among people of many ages and skill sets? By listening and learning -- and addressing the possibility of failure.

We all want to be safe, and our safety is intertwined, says Tracie Keesee, cofounder of the Center for Policing Equity. Sharing lessons she's learned from 25 years as a police officer, Keesee reflects on the public safety challenges faced by both the police and local neighborhoods, especially in the African American community, as well as the opp...

What's the harm in buying a knock-off purse or a fake designer watch? According to counterfeit investigator Alastair Gray, fakes like these fund terrorism and organized crime. Learn more about the trillion-dollar underground economy of counterfeiting -- from the criminal organizations that run it to the child labor they use to produce its goods ...

How do parents protect their children and help them feel secure again when their homes are ripped apart by war? In this warm-hearted talk, psychologist Aala El-Khani shares her work supporting -- and learning from -- refugee families affected by the civil war in Syria. She asks: How can we help these loving parents give their kids the warm, secu...

When companies think of diversity and inclusion, they too often focus on meeting metrics instead of building relationships with people of diverse backgrounds, says Starbucks COO Rosalind G. Brewer. In this personable and wide-ranging conversation with TED current affairs curator Whitney Pennington Rodgers, Brewer invites leaders to rethink what ...

The world's largest volunteer animal rescue, saved more than 40,000 penguins after an oil spill off the coast of South Africa. Dyan deNapoli tells the triumphant story. How does a job this big get done? Penguin by penguin by penguin ...

When a freak tornado hit their hometown, sisters Caitria and Morgan O'Neill -- just 20 and 24 at the time -- realized they had to jump in and help. What they learned is: After a natural disaster, there's only a tiny window before the world turns its sympathy (and its donations) elsewhere -- so it's important to be prepared for every aspect of re...

If architect and writer John Cary has his way, women will never need to stand in pointlessly long bathroom lines again. Lines like these are representative of a more serious issue, Cary says: the lack of diversity in design that leads to thoughtless, compassionless spaces. Design has a unique ability to dignify and make people feel valued, respe...

What makes you speak up -- or not -- when you see something you know is wrong? Memory scientist Julia Shaw explains the psychology of those who witness workplace discrimination and harassment -- and shares actionable steps companies can take to support and amplify their voices.

Companies in the US spend billions of dollars each year on diversity, equity and inclusion initiatives, but subtle (and not so subtle) workplace biases often cost these initiatives -- and the people they're meant to help -- big time by undermining their goals. DEI expert Joan C. Williams identifies five common patterns of bias that cause these p...

In this highly personal talk from TEDMED, magician and stuntman David Blaine describes what it took to hold his breath underwater for 17 minutes -- a world record (only two minutes shorter than this entire talk!) -- and what his often death-defying work means to him. Warning: do NOT try this at home.

Tyler Gilmore is a veteran of the Marines who vocally expressed his support for the trans ban. In this episode Dylan connects him to Maddie Makara, a veteran who served for 16 years and recently came out as a trans woman (Audio Only).

Light, bright, and cheerful, "The Four Seasons" by Antonio Vivaldi is some of the most familiar of all early 18th century music, featured in numerous films and television commercials. But what is its significance, and why does it sound that way? Betsy Schwarm uncovers the underlying narrative of this musical masterpiece. [Directed by Compote Col...

Conservationists Megan Parker and Peter Coppolillo explain — with a demonstration from conservation dog Ruger — how dogs can help organizations collect crucial conservation data ranging from detecting contraband to helping track and preserve endangered species.

Tango, waltz, foxtrot ... these classic ballroom dances quietly perpetuate an outdated idea: that the man always leads and the woman always follows. That's an idea worth changing, say Trevor Copp and Jeff Fox, as they demonstrate their "Liquid Lead" dance technique along with fellow dancer Alida Esmail. Watch as Copp and Fox captivate and comman...

How do you get what you want, using just your words? Aristotle set out to answer exactly that question over two thousand years ago with a treatise on rhetoric. Camille A. Langston describes the fundamentals of deliberative rhetoric and shares some tips for appealing to an audience's ethos, logos, and pathos in your next speech. [Directed by Hect...

The Great Wall of China is a 13,000-mile dragon of earth and stone that winds its way through the countryside of China. As it turns out, the wall's history is almost as long and serpentine as its structure. Megan Campisi and Pen-Pen Chen detail the building and subsequent decay of this massive, impressive wall. [Directed by Steff Lee, narrated b...

One summer evening in 335 BCE, Alexander the Great was resting by the Danube River when a band of strangers approached his camp. Alexander had never seen anything like these tall, fierce-looking warriors with huge golden neck rings and colorful cloaks. They were Keltoi or Celts— a collection of independent tribes spread across Europe. Philip Fre...

Joel Jackson wants to reimagine transportation around the needs of the African consumer. He's designed an SUV that's rugged enough for long stretches of uneven terrain and affordable enough to be within reach of those who need it most. Learn more about the challenges of mobility and manufacturing in Africa -- and what a localized motor industry ...

Business management in China is changing, says consultant Fang Ruan. Learn how Chinese entrepreneurs -- long guided by Confucianism's emphasis on authority and regulation -- are now looking to Taoist philosophy for a new, dynamic leadership style that believes things spontaneously transform and naturally achieve perfection when they're supported...

After a catastrophic car accident that left him in a coma, Simon Lewis found ways to recover -- physically and mentally -- beyond all expectations. At the INK Conference he tells how this remarkable story led him to concern over all threats to consciousness, and how to overcome them.

Plenty of people need jobs with very flexible hours -- but it's difficult for those people to connect with the employers who need them. Wingham Rowan is working on that. He explains how the same technology that powers modern financial markets can help employers book workers for slivers of time.

Difficult emotions can get under your skin if you're not careful. Sport and performance consultant Jessica Garza calls this the "jumping cholla effect," inspired by a sneaky kind of cactus that detaches and burrows its spines into unsuspecting passersby. In this empowering talk, she shares four mood-regulating strategies to help you gain self-aw...

Whether they're belting Beyoncé, head-banging to classic rock, or rattling off curse words at zoo-goers, parrots are constantly astounding us. They are among the only animals that produce human speech, and some parrots do it almost uncannily well. How is this possible? Grace Smith-Vidaurre and Tim Wright dig into the anatomy that allows parrots ...