In an unmissable talk about race and politics in America, Theo E.J. Wilson tells the story of becoming Lucius25, white supremacist lurker, and the unexpected compassion and surprising perspective he found from engaging with people he disagrees with. He encourages us to let go of fear, embrace curiosity and have courageous conversations with people who think differently from us. "Conversations stop violence, conversations start countries and build bridges," he says.
Science fiction visions of the future show us AI built to replicate our way of thinking -- but what if we modeled it instead on the other kinds of intelligence found in nature? Robotics engineer Radhika Nagpal studies the collective intelligence displayed by insects and fish schools, seeking to understand their rules of engagement. In a visionary talk, she presents her work creating artificial collective power and previews a future where swarms of robots work together to build flood barriers, pollinate crops, monitor coral reefs and form constellations of satellites.
How can you study Mars without a spaceship? Head to the most Martian place on Earth -- the Atacama Desert in Chile. Astrobiologist Armando Azua-Bustos grew up in this vast, arid landscape and now studies the rare life forms that have adapted to survive there, some in areas with no reported rainfall for the past 400 years. Explore the possibility of finding life elsewhere in the universe without leaving the planet with this quick, funny talk.
Between 2008 and 2016, the United States deported more than three million people. What happens to those left behind? Journalist Duarte Geraldino picks up the story of deportation where the state leaves off. Learn more about the wider impact of forced removal as Geraldino explains how the sudden absence of a mother, a local business owner or a high school student ripples outward and wreaks havoc on the relationships that hold our communities together.
How can Africa, the home to some of the largest bodies of water in the world, be said to have a water crisis? It doesn't, says Olu?fe??mi Ta?i?wo? -- it has a knowledge crisis. Ta?i?wo? suggests that lack of knowledge on important topics like water and food is what stands between Africa's current state and a future of prosperity. In a powerful talk, he calls for Africa to make the production of knowledge within the continent rewarding and reclaim its position as a locus of learning on behalf of humanity.
What if you could know exactly how food or medication would impact your health -- before you put it in your body? Genomics researcher Jun Wang is working to develop digital doppelgangers for real people; they start with genetic code, but they'll also factor in other kinds of data as well, from food intake to sleep to data collected by a "smart toilet." With all of this valuable information, Wang hopes to create an engine that will change the way we think about health, both on an individual level and as a collective.
In the century-old statues that occupy Cape Town, Sethembile Mzesane didn't see anything that looked like her own reality. So she became a living sculpture herself, standing for hours on end in public spaces dressed in symbolic costumes, to reclaim the city and its public spaces for her community. In this powerful, tour-de-force talk, she shares the stories and motivation behind her mesmerizing performance art.
Physics doesn't just happen in a fancy lab -- it happens when you push a piece of buttered toast off the table or drop a couple of raisins in a fizzy drink or watch a coffee spill dry. Become a more interesting dinner guest as physicist Helen Czerski presents various concepts in physics you can become familiar with using everyday things found in your kitchen.
We've heard a lot of rhetoric lately suggesting that countries like the US are losing valuable manufacturing jobs to lower-cost markets like China, Mexico and Vietnam -- and that protectionism is the best way forward. But those jobs haven't disappeared for the reasons you may think, says border and logistics specialist Augie Picado. He gives us a reality check about what global trade really looks like and how shared production and open borders help us make higher quality products at lower costs.
Forget quinoa. Meet fonio, an ancient "miracle grain" native to Senegal that's versatile, nutritious and gluten-free. In this passionate talk, chef Pierre Thiam shares his obsession with the hardy crop and explains why he believes that its industrial-scale cultivation could transform societies in Africa.
Each year, one in seven large corporations commits fraud. Why? To find out, Alexander Wagner takes us inside the economics, ethics and psychology of doing the right thing. Join him for an introspective journey down the slippery slopes of deception as he helps us understand why people behave the way they do.
Our culture is obsessed with happiness, but what if there's a more fulfilling path? Happiness comes and goes, says writer Emily Esfahani Smith, but having meaning in life -- serving something beyond yourself and developing the best within you -- gives you something to hold onto. Learn more about the difference between being happy and having meaning as Smith offers four pillars of a meaningful life.
Can you still be friends with someone who doesn't vote the same way as you? For Caitlin Quattromani and Lauran Arledge, two best friends who think very differently about politics, the outcome of the 2016 US presidential election could have resulted in hostility and disrespect. Hear about how they chose to engage in dialogue instead -- and learn some simple tactics they're using to maintain their bipartisan friendship.
Underneath every shiny new megacity, there's often a story of communities displaced. In this moving, poetic talk, OluTimehin Adegbeye details how government land grabs are destroying the lives of thousands who live in the coastal communities of Lagos, Nigeria, to make way for a "new Dubai." She compels us to hold our governments and ourselves accountable for keeping our cities safe for everyone. "The only cities worth building, indeed the only futures worth dreaming of, are those that include all of us, no matter who we are or how we make homes for ourselves," she says.
What the astronauts felt when they saw Earth from space changed them forever. Author and artist Benjamin Grant aims to provoke this same feeling of overwhelming scale and beauty in each of us through a series of stunning satellite images that show the effects human beings are having on the planet. "If we can adopt a more expansive perspective, embrace the truth of what is going on and contemplate the long-term health of our planet, we will create a better, safer and smarter future for our one and only home," Grant says.
In a mind-bending talk that blurs the line between science and art, Tomás Saraceno exhibits a series of air-inspired sculptures and installations designed to usher in a new era of sustainability, the "Aerocene." From giant, cloud-like playgrounds suspended 22 meters in the air to a balloon sculpture that travels the world without burning a single drop of fossil fuel, Saraceno's work invites us to explore the bounds of our fragile human and terrestrial ecosystems. (In Spanish with English subtitles.)
What if you knew what your coworkers really thought about you and what they were really like? Ray Dalio makes the business case for using radical transparency and algorithmic decision-making to create an idea meritocracy where people can speak up and say what they really think -- even calling out the boss is fair game. Learn more about how these strategies helped Dalio create one of the world's most successful hedge funds and how you might harness the power of data-driven group decision-making.
Terrorists and extremists aren't all naturally violent sociopaths -- they're deliberately recruited and radicalized in a process that doesn't fit into a neat pattern. Erin Marie Saltman discusses the push and pull factors that cause people to join extremist groups and explains innovative ways of preventing and countering radicalization.
Daan Roosegaarde uses technology and creative thinking to produce imaginative, earth-friendly designs. He presents his latest projects -- from a bike path in Eindhoven, where he reinterpreted "The Starry Night" to get people thinking about green energy, to Beijing, where he developed a smog vacuum cleaner to purify the air in local parks, to a dance floor that generates electricity to power a DJ booth. Check out Roosegaarde's vision for a future where creativity is our true capital.
We all have origin stories and identity myths, our tribal narratives that give us a sense of security and belonging. But sometimes our small-group identities can keep us from connecting with humanity as a whole -- and even keep us from seeing others as human. In a powerful talk about how we understand who we are, Chetan Bhatt challenges us to think creatively about each other and our future. As he puts it: it's time to change the question from "Where are you from?" to "Where are you going?"
Digital archaeologist Chance Coughenour is using pictures -- your pictures -- to reclaim antiquities that have been lost to conflict and disaster. After crowdsourcing photographs of destroyed monuments, museums and artifacts, Coughenour uses advanced technology called photogrammetry to create 3D reconstructions, preserving the memory of our global, shared, human heritage. Find out more about how you can help celebrate and safeguard history that's being lost.
What's stopping the American government from recording your phone calls, reading your emails and monitoring your location? Very little, says surveillance and cybersecurity counsel Jennifer Granick. The government collects all kinds of information about you easily, cheaply and without a warrant -- and if you've ever participated in a protest or attended a gun show, you're likely a person of interest. Learn more about your rights, your risks and how to protect yourself in the golden age of surveillance.
Meet Todai Robot, an AI project that performed in the top 20 percent of students on the entrance exam for the University of Tokyo -- without actually understanding a thing. While it's not matriculating anytime soon, Todai Robot's success raises alarming questions for the future of human education. How can we help kids excel at the things that humans will always do better than AI?
Could it be wrong to help children in need by starting an orphanage? In this eye-opening talk about the bad consequences of good intentions, Tara Winkler speaks out against the spread of orphanages in developing countries, caused in part by foreign donors, and details the harm done to children when they are separated from their families and left to grow up in institutions.
We're so used to narratives out of Africa being about war, poverty and devastation, says TED Fellow Wanuri Kahiu. Where's the fun? Introducing "AfroBubbleGum" -- African art that's vibrant, lighthearted and without a political agenda. Rethink the value of all that is unserious as Kahiu explains why we need art that captures the full range of human experiences to tell the stories of Africa.