The Amazon River is like a heart, pumping water from the seas through it, and up into the atmosphere through 600 billion trees, which act like lungs. Clouds form, rain falls and the forest thrives. In a lyrical talk, Antonio Donato Nobre talks us through the interconnected systems of this region, and how they provide environmental services to the entire world. A parable for the extraordinary symphony that is nature.
Dan Barasch and James Ramsey have a crazy plan — to create a park, filled with greenery, underneath New York City. The two are developing the Lowline, an underground greenspace the size of a football field. They're building it in a trolley terminal abandoned in 1948, using technology that harvests sunlight above-ground and directs it down below. It's a park that can thrive, even in winter.
Brain imaging pioneer Nancy Kanwisher, who uses fMRI scans to see activity in brain regions (often her own), shares what she and her colleagues have learned: The brain is made up of both highly specialized components and general-purpose "machinery." Another surprise: There's so much left to learn.
Rishi Manchanda has worked as a doctor in South Central Los Angeles for a decade, where he’s come to realize: His job isn’t just about treating a patient’s symptoms, but about getting to the root cause of what is making them ill—the “upstream" factors like a poor diet, a stressful job, a lack of fresh air. It’s a powerful call for doctors to pay attention to a patient's life outside the exam room.
A forest planted by humans, then left to nature's own devices, typically takes at least 100 years to mature. But what if we could make the process happen ten times faster? In this short talk, eco-entrepreneur (and TED Fellow) Shubhendu Sharma explains how to create a mini-forest ecosystem anywhere.
Colin Grant has spent a lifetime navigating the emotional landscape between his father’s world and his own. Born in England to Jamaican parents, Grant draws on stories of shared experience within his immigrant community -- and reflects on how he found forgiveness for a father who rejected him.
Doesn't it seem like a lot of online news sites have moved beyond reporting the news to openly inciting your outrage (and your page views)? News analyst Sally Kohn suggests — don't engage with news that looks like it just wants to make you mad. Instead, give your precious clicks to the news sites you truly trust.
Why is there something instead of nothing? In other words: Why does the universe exist (and why are we in it)? Philosopher and writer Jim Holt follows this question toward three possible answers. Or four. Or none.
Author Isabel Allende is 71. Yes, she has a few wrinkles—but she has incredible perspective too. In this candid talk, meant for viewers of all ages, she talks about her fears as she gets older and shares how she plans to keep on living passionately.
Big Data is everywhere — even the skies. In an informative talk, astronomer Andrew Connolly shows how large amounts of data are being collected about our universe, recording it in its ever-changing moods. Just how do scientists capture so many images at scale? It starts with a giant telescope ...
This talk begins with a personal story of sexual violence that may be difficult to listen to. But that's the point, says citizen journalist Meera Vijayann: Speaking out on tough, taboo topics is the spark for change. Vijayann uses digital media to speak honestly about her experience of gender violence in her home country of India -- and calls on others to speak out too.
A post-apocalyptic Earth, emptied of humans, seems like the stuff of science fiction TV and movies. But in this short, surprising talk, Lord Martin Rees asks us to think about our real existential risks — natural and human-made threats that could wipe out humanity. As a concerned member of the human race, he asks: What's the worst thing that could possibly happen?
Behind those funny animal videos, sometimes, are oddly human-like problems. Laurel Braitman studies non-human animals who exhibit signs of mental health issues -- from compulsive bears to self-destructive rats to monkeys with unlikely friends. Braitman asks what we as humans can learn from watching animals cope with depression, sadness and other all-too-human problems.
Across sub-Saharan Africa, small farmers are the bedrock of national and regional economies—unless the weather proves unpredictable and their crops fail. The solution is insurance, at a vast, continental scale, and at a very low, affordable cost. Rose Goslinga and the Syngenta Foundation for Sustainable Agriculture pioneered an unconventional way to give farmers whose crops fail early a second chance at a growing season.
The Fez River winds through the medina of Fez, Morocco—a mazelike medieval city that's a World Heritage site. Once considered the "soul" of this celebrated city, the river succumbed to sewage and pollution, and in the 1950s was covered over bit by bit until nothing remained. TED Fellow Aziza Chaouni recounts her 20 year effort to restore this river to its former glory, and to transform her city in the process.
Ziyah Gafić photographs everyday objects—watches, shoes, glasses. But these images are deceptively simple; the items in them have been exhumed from the mass graves of the Bosnian War. Gafić, a TED Fellow and Sarajevo native, is photographing every item from these graves in order to create a living archive of the identities of those lost.
Children's book author Jarrett Krosoczka shares the origins of the Lunch Lady graphic novel series, in which undercover school heroes serve lunch...and justice! His new project, School Lunch Hero Day, reveals how cafeteria lunch staff provide more than food, and illustrates how powerful a thank you can be.
Sir Tim Berners-Lee invented the World Wide Web 25 years ago. So it’s worth a listen when he warns us: There’s a battle ahead. Eroding net neutrality, filter bubbles and centralizing corporate control all threaten the web’s wide-open spaces. It’s up to users to fight for the right to access and openness. The question is, What kind of Internet do we want?
Far too many Americans are illiterate in power — what it is, how it operates and why some people have it. As a result, those few who do understand power wield disproportionate influence over everyone else. “We need to make civics sexy again,” says civics educator Eric Liu. “As sexy as it was during the American Revolution or the Civil Rights Movement.”
"We spend so much time listening to the things people are saying that we rarely pay attention to the things they don't," says poet and teacher Clint Smith. A short, powerful piece from the heart, about finding the courage to speak up against ignorance and injustice.
In the United States, the agencies that govern prisons are often called 'Department of Corrections.' And yet, their focus is on containing and controlling inmates. Dan Pacholke, Deputy Secretary for the Washington State Department of Corrections, shares a different vision: of prisons that provide humane living conditions as well as opportunities for meaningful work and learning.
The new breed of high-tech self-monitors (measuring heartrate, sleep, steps per day) might seem targeted at competitive athletes. But Talithia Williams, a statistician, makes a compelling case that all of us should be measuring and recording simple data about our bodies every day — because our own data can reveal much more than even our doctors may know.
Nick Hanauer is a rich guy, an unrepentant capitalist — and he has something to say to his fellow plutocrats: Wake up! Growing inequality is about to push our societies into conditions resembling pre-revolutionary France. Hear his argument about why a dramatic increase in minimum wage could grow the middle class, deliver economic prosperity ... and prevent a revolution.
Megan Washington is one of Australia's premier singer/songwriters. And, since childhood, she has had a stutter. In this bold and personal talk, she reveals how she copes with this speech impediment—from avoiding the letter combination “st” to tricking her brain by changing her words at the last minute to, yes, singing the things she has to say rather than speaking them.
Tour the deep dark world of the East German state security agency known as Stasi. Uniquely powerful at spying on its citizens, until the fall of the Berlin Wall in 1989 the Stasi masterminded a system of surveillance and psychological pressure that kept the country under control for decades. Hubertus Knabe studies the Stasi — and was spied on by them. He shares stunning details from the fall of a surveillance state, and shows how easy it was for neighbor to turn on neighbor.
At the online University of the People, anyone with a high school diploma can take classes toward a degree in business administration or computer science — without standard tuition fees (though exams cost money). Founder Shai Reshef hopes that higher education is changing "from being a privilege for the few to a basic right, affordable and accessible for all."
Inspired by biological design and self-organizing systems, artist Heather Barnett co-creates with physarum polycephalum, a eukaryotic microorganism that lives in cool, moist areas. What can people learn from the semi-intelligent slime mold? Watch this talk to find out.